Leigh B975 User Manual

See Page 65 for Customer Support

1-800-663-8932

User Guide

Leigh Router Joinery Jigs

Router Table

Workbench

Leigh Box Joint

& Beehive Jig

Model B975

For WorkBench or Router Table Use

B975 User Guide

2

Chapter 1 Introduction 5

Jig Parts 5

Bit Specifications 7

Symbols for Board Position 8

Clamping 8

Chapter 2 Safety 9

Chapter 3 The Leigh e10 eBush 11

Chapter 4 Mounting & Assembly 15

Chapter 5 Routing Box Joints 25

Chapter 6 Routing Wider Boards 37

Chapter 7 Router Table Operation 47

Chapter 8 Guide Bushing Adapter Selection 63

Chapter 9 Customer Support 65

Contents

5 Year Warranty

Leigh stands behind its products with a 5 year limited warranty. See the
complete warranty in Chapter 9, Customer Support.

Your New Leigh Box Joint & Beehive Jig, Model B975

The Leigh Box Joint & Beehive Jig, Model B975, is a simple, easy-to-use tool for making
1/2" and 3/4" box joints on boards up to 13/16"[20.6mm] thick, and from 1-1/2"[38mm]
to 17-13/16"[453mm] wide. Not by accident, the full 9-11/16"[246mm] width of the jig
is the standard height of a typical beehive super, used in North America.

Customer Support

If you have any questions that are not answered in this user guide, please call Leigh Customer
Support: 1-800-663-8932 in North America or email: [email protected]. For support
contacts in your country of purchase, see Customer Support at the end of this Guide.
Leigh user guides are updated as required. A downloadable pdf of the latest version can be
found on the Support page at leighjigs.com.

Reminder: If at first you don’t succeed, read the instructions!

B975 User Guide

3

*You must be at least 21 years of age to enter. Employees of Leigh Industries Ltd. and their families are ineligible to enter or win.
This offer void where prohibited by law. Customer must complete a short online questionnaire. One winner will be drawn every
two months. Winners will be notified by email and by phone. Leigh product is only available directly from Leigh or its international
distributor in the region of the winner. No cash value. Value is in the currency of the country of winner equal to $300.00 USD based
on currency exchange at the time of the draw. Complete details available at www.leighjigs.com.

Register your Leigh B975

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Privacy Policy Leigh will NEVER rent, sell or distribute your information.

• Be the first to learn new ways to use your jig

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*

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B975 User Guide

4

This page is left blank intentionally.

5

*Leigh e10 Elliptical Guide Bushing: U.S. Patent no. 9,375,860 UK Patent no. GB2443974

Note: PDF of User Guide included on DVD

If any parts are missing from your jig, please notify your supplier
or Leigh immediately. See Chapter 9, Customer Support.

PART DESCRIPTION PART NO. QUANTITY

A

Jig Template with Decal 313503 1

Bag 1

B

Side Stop Assembly, 1/2" 313530 1

C

Side Stop Assembly, 3/4" 313535 1

D

Step-over Cam with O-ring, 1/2" 313550 1

E

Step-over Cam with O-ring, 3/4" 313555 1

Bag 2

F

Pan Head Wood Screws, No.8 x 1" 313585 10

G

Guide Bushing, e10* eBush e10 1

H

Straight Bit, 1/2" 160 1

I

Pin Wrench 730V 1

Bag 3

J

Fully Illustrated User Guide 313565 1

K

Instructional DVD 313570 1

What’s Included

B975 User Guide

CHAPTER 1

Introduction

A

B

C

D

E

F

G

H

K

I

J

B975 User Guide

Chapter 1 Introduction

6

1/2" Bit

e10 eBush

Clamps

(User Supplied)

Step-over Cam 3/4"

Step-over Cam 1/2"

MDF Beam

(User Made)

Side Stop

Template

Router (User Supplied)

Leigh Box Joint & Beehive Jig

Thumb Lock

Pin Board and
Socket Board Stops

B975 User Guide

Chapter 1 Introduction

7

Bit Specifications

Leigh Bits

A

Bit

Diameter

B

Max.

Cutting

Depth

C

Shank

Diameter

D

Shank

Length

E

Overall
Length

Use with Collet/

Collet reducer

Use with

eBush

160

*

Carbide tipped

1/2" 1-1/4" 1/2" 1-7/8" 3-1/8"

1/2"

Collet

e10

180

**

High Speed Steel

1/2" 1-3/4" 1/2" 1-3/4" 3-1/2"

1/2"

Collet

e10

180C

**

Solid Carbide

1/2" 1-5/8" 1/2" 1-7/8" 3-1/2"

1/2"

Collet

e10

Bit Specifications

There is only one bit size used with the Box Joint & Beehive Jig. Your new jig is shipped

with a 1/2", 2 flute, carbide tipped straight bit. You may also use a 1/2" spiral up cut bit
in high speed steel or solid carbide.

E

* 160 bit comes with the Beehive Box Joint Jig
** Optional spiral up cut bits rout cleaner and faster, leaving a smoother finish

A

C

B

D

E

A

C

Units of Measure

IMPORTANT! INCHES AND MILLIMETERS

Text and illustrations in this English language user guide indicate dimensions in both
inches and millimeters, where applicable, with “inches” first, followed by “millimeters” in
square brackets, i.e. 1/2" x 2"[12.7mm x 51mm].

Don’t be concerned that the inch/millimeter equivalents are not mathematically
“correct”.

BD

B975 User Guide

Chapter 1 Introduction

8

Symbols for Board Position

The following symbols are used throughout this user guide. They indicate which edge of
the board goes against the side stop.

This board edge against the side stop.

This board edge against the side stop (on other side of the board hidden from view).

Box Assembly

Assemble the box, keeping the
marked edges of the boards together
as shown.

Clamping

Note: Before mounting and
routing the boards, you
should mark them with the
appropriate symbols.

With
box joints, the same board
edge

A

always goes against the
side stop. Boards are clamped
against the beam both face in and
face out for alternate end cuts.

A

A

9



Always wear:

• approved safety glasses;

• a face mask to protect yourself
from harmful dust;

• hearing protection.

Safety is not optional. Read and
follow the recommendations here.

 Never drink alcohol or

take medications that can cause

drowsiness while operating a router.

Read the owner’s manual that
came with your router and router
table. It is essential to understand
all manufacturer’s instructions
completely.

B975 User Guide

CHAPTER 2

Safety

10

B975 User Guide

Chapter 2 Safety



Always disconnect the power

source before installing bits, guide

bushings or making adjustments. Before
reconnecting the router to the power
source, make sure the bit and collet
revolve freely with and without the
guide bushing in place.

After routing, wait for the bit to come
to a complete stop before removing the
router from the jig.



Never rout at face level.

Chips and sawdust are thrown out at
high speed. ■



Do not tilt the router.

Keep
the router flat on the jig during all
routing.

11

B975 User Guide

CHAPTER 3

The Leigh e10 eBush

3-2 The barrel of the e10 steers

the router and the bit in and around
the openings of the template.

3-1 How the e10 Works

Routing on the B975 requires a
router fitted with the included e10
eBush (guide bushing).

The e10 is installed in the base of
the router and the guide bushing
retaining nut is screwed on, under
the router base.

Patents for Leigh elliptical guide bushings: U.S. 9,375,860 UK GB2443974

Note: Normal tolerances with bits, guide bushings
and router runout will generally produce poor fitting
joints. The included Leigh e10 elliptical guide bushing
(eBush) solves this problem.

12

B975 User Guide

12

Chapter 3 The Leigh eBush

3-5 All routing starts with

the eBush in the No.5 position.

This allows adjustment for a tighter
or looser fit. Turning the eBush
toward the 10 position A results in a
tighter fit. Turning the eBush toward
the 0 position B results in a looser fit.

Be sure to retighten the e-Bush
nut after each adjustment.

A

B

3-4 The Leigh eBush barrel

A

is elliptical , unlike plain circular
template guide bushings B. When
the e10 is rotated, the effective
diameter of the barrel changes,
allowing fit adjustments as small as

0.001"[0.025mm]. The e10 eBush
is included with the jig.

B

A

3-3 The Leigh eBush System is

designed around the 1-3/8" industry
standard. Some routers accept the
Leigh eBush directly. Many routers
require the use of a guide bushing
adapter. If your router requires an
adapter, please see the Guide Bushing
Adapter chart and Leigh guide
bushing adapters in Chapter 8.

1

3

/16"

0.100"

1

3

/8"

13

B975 User Guide

Chapter 3 The Leigh eBush

3-6

Joint Fit Adjustment The
effective diameter of the e10 is 5/8" at
the 10 position. Rotating the eBush
to the 0 position reduces the effective
diameter by 0.020"[0.5mm].

5/8"

0.010"

0.010"

3-7 One increment of the eBush

changes the joint glue line by

0.002"[0.05mm]. Half an increment
changes the fit by an incredible

0.001"[0.025mm]. A perfect fit will
be established with one or two test
cuts.

3-8 Each chapter provides a place

to mark your perfect eBush setting,
for easy repeatability the next time.

May 5, 3/4" joint

Walnut, 160 bit

Feb.28, 1/2" joint

Maple, 160 bit

EXAMPLE ONLY

14

B975 User Guide

14

Chapter 3 The Leigh eBush

3-11 Install the e10-Bush in the

router base and use the pin wrench
to align the 0 to the reference line.
The 0 setting is only used for beam
preparation. All other routing begins
with the eBush set to 5.

Be sure to retighten the eBush
nut after each adjustment.

■

3-10 Make a small scratch line on

the router base or eBush adapter,
at the 12 o’clock position. This will
be a reference line for all eBush
settings A.

3-9

Fitting the eBush to the

Router. Place the router on the jig

with handles positioned the way you
would normally hold the router A.
Then turn the router upside down
and place it on the workbench B,
keeping the same face of the router
toward you.

A

A

B

A

15

B975 User Guide

CHAPTER 4

Mounting
& Assembly

The instructions on the
following pages will guide
you through the assembly
process for the Leigh B975.

You will need:

• A workbench with vice or a
portable workbench

• 2 pieces of 3/4" MDF to make
a beam 1-1/2"x 3-1/2" x 16"
[38mm x 90mm x 406mm]

• Router with 1/2" collet

• Electric drill, preferably bench
or pedestal, but handheld will
work

• 1/8" drill bit

• Two Quick-Grip clamps

• Square, ruler or tape measure

• No.2 Phillips screwdriver

• Wood Glue

16

B975 User Guide

Chapter 4 Mounting & Assembly

4-1 Making the Beam We

recommend laminating the two
pieces of 3/4" MDF. Place the glued
pieces in a vice or use clamps to hold
them together. The template will be
attached to the top of the beam, so
be sure the top edges are flush and
free of glue residue. Set aside to dry
completely. Alternatively, a common
2x4 may be used. See step 4-15 for
special instructions.

4-3 The 1/2" comb has position-

ing ridges A molded into the
bottom side of the template.

A

4-2 One side of the template is

used for 3/4" box joints and the
other side is used for 1/2" joints.

B975 User Guide

Chapter 4 Mounting & Assembly

17

4-4 With the 3/4" comb facing

you, lay the template flat on the
beam and center it left to right. Slide
the template forward until the ridges
on the underside of the 1/2" comb
contact the back of the beam. The
template is now positioned correctly.

4-5 Use a pencil and mark the

location of all screw holes on the top
of the template. Hold the template in
place and proceed to the next step.

4-6 Make a pencil line on the top

of the beam at each end of the jig on
the 3/4" and 1/2" sides.

18

B975 User Guide

Chapter 4 Mounting & Assembly

4-8 Mark layout lines for the side

stops. First, place the beam flat on
the workbench with the 1/2" side
of the beam facing up. Use a square
and draw a vertical line down from
the positioning mark on the top of
the beam.

4-9 Next, draw a horizontal line,

1" down from the top of the beam.

Rotate the beam and repeat for the
3/4" side.

4-7 Remove the template and

mark 3/4" and 1/2" beside the lines,
to indicate which is the 3/4" and
which is the 1/2" side of the beam.

1"

3/4 "

1/2 "

1/2 "

1/2 "

B975 User Guide

Chapter 4 Mounting & Assembly

19

4-11 Install the 3/4" side stop. Lift

the thumb lock A, retract the center
portion of the 3/4" side stop fully
and press the thumb lock down to
lock it in place. Position it against
the layout lines as shown.

Use a pencil to mark the screw hole
locations.

Rotate the beam and repeat the
process for the 1/2" side.

4-12 Use a drill press or hand drill

with a 1/8" bit to drill pilot holes at
all screw hole locations.

4-10

The 3/4" and 1/2" side stops
will be attached in the following
steps.

3/4" Side Stop

1/2" Side Stop

3/4"

20

B975 User Guide

Chapter 4 Mounting & Assembly

4-15 Alternatively, you can use

a straight, flat 16"[406mm] piece
of common 2x4. Since a 2x4 has
slightly rounded corners, the top
edge should be squared off.

4-14 Place the beam on the

workbench with the 3/4" side of the
beam facing up. Position the 3/4"
side stop against the horizontal and
vertical lines, with the thumb lock
facing the left end of the beam, and
attach it using the included screws.
Again, use a screwdriver, not a power
drill, to attach the side stop.

Repeat the process with the 1/2" side
stop on the 1/2" side of the beam.

4-13 Clamp the beam in the vice

with its 3/4" side facing you. Position
the template on the beam with the
3/4" side of the template facing you.
Align it with the pre-drilled holes.

Use a screwdriver to attach the
template with six of the included
screws.



Do not use a power
drill, as this may overstress the
template.

B975 User Guide

Chapter 4 Mounting & Assembly

21

4-16

Use a table saw, router table or
jointer to skim off the top surface of
the 2x4. Now go back to step 4-7 for
the rest of the beam preparation.

4-18 Prepare the Beam

To prevent tearout of the beam,
grooves must be routed in all
template openings, on both sides of
the beam, as shown in the following
steps.

Preparing the beam is particularly
important when using a common
2x4 because its side grain will tear
out badly.

4-17

Install the Bit

Install the No.160 1/2" straight bit
(or equivalent) in the router. The bit
goes through the guide bushing and
fits in the router collet.

Tighten the collet and rotate the bit
and collet to ensure it spins freely
and does not contact the eBush or
eBush nut.

22

B975 User Guide

Chapter 4 Mounting & Assembly

4-20 With the socket board stop

fully retracted, and the 3/4" side of
the jig facing you, lower the jig onto
the board. Slide the jig over until the
left edge of the board touches the
socket board stop as shown.

Clamp the jig in place.

4-21 Place the router on the jig and

adjust the tip of the bit up or down
until it’s at the center of the line.
Rotate the bit and collet to ensure
it spins freely and does not contact
the eBush.

4-19 Depth of Cut

Select a board at least 9-3/4"
[248mm] wide and 1/2" to 3/4"
thick. Length is not important as
long as it can be clamped safely in
the vice.

Set the depth of cut by marking a line
3/4" from the top end of the board.
Clamp the board in the vice with the
depth of cut line facing you.

B975 User Guide

Chapter 4 Mounting & Assembly

23

4-22 Hold the router firmly and

rout through the board and into the
beam, in each template opening.
Be sure the guide bushing touches
the left side of each template opening
on the way in and the right side on
the way out.

Use the other end of the board and
repeat for the 1/2" side of the jig.

4-23 There will now be a clean

groove in each template opening on
both sides of the beam.

The beam and jig are now ready to
use.

■

24

B975 User Guide

Chapter 4 Mounting & Assembly

This page is left blank intentionally.

25

B975 User Guide

CHAPTER 5

Routing Box Joints

Note: Routing Procedures for 3/4" and 1/2"
joints are identical. This chapter shows
steps for 3/4" joints.

5-1 Getting Started The steps

in this chapter show the jig used
on a workbench. For router table
operation, see Chapter 7.

5-2

Parts Required 3/4" and 1/2" box joints are routed with the included Leigh

No.160 1/2" straight bit and the Leigh e10 guide bushing (eBush).

No other bit diameter

and guide bushing combination may be used.

Maximum board thickness for both
joint sizes is 13/16"[20.6mm]. Depth of cut can be increased beyond the board thickness
for raised joints. Note: Optional 1/2" diameter spiral upcut bits may also be used.

1/2"

1/2"

1/4"

3/4"

0"

13/16"

160
180

Depth of Cut

Item No. Carbide Tipped

Bit Diameter

Item No.

Spiral HSS (Optional)

Item No. Spiral Solid Carbide (Optional)

180C

Bit Cutting Depth

160

(included)

e10

Guide Bushing

180 180C

(Optional Bits)

1-1/4"

1/2"

1/2"

1-3/4"

1/2"

1-5/8"

P

IMPORTANT SAFETY NOTE

Before using your Leigh B975, you must
have completed the preparatory steps
listed in the previous pages, including
reading the jig safety recommendations
in Chapter 2.

26

B975 User Guide

Chapter 5 Routing Box Joints

5-3

Joint layout

Review the drawings below.

Symmetrical

joints have pins Aon both

edges of the pin board, and sockets

B

on both edges of the socket board.

Asymmetrical

joints have a pinCon one edge and a socketDon the other edge of each board.

5-4

Board Width Selection

Board widths are determined by the total number of pins
and sockets in the joint design and whether the joint is symmetrical or asymmetrical. Use
this chart to determine board widths up to the full width of the jig: 9-11/16"[246 mm].
Routing box joints on wider boards will be covered in Chapter 6.

Symmetrical Board Widths for

¾

"

Box Joints

Total Pins & Sockets

3 5 7 9 11 13

Inches 2 /" 3 /" 5 /" 6 /" 8 /" 9 /"

Millimeters 56 94 132 170 208 246

Asymmetrical Board Widths for

½

"

Box Joints

Total Pins & Sockets

4 6 8 10 12 14 16 18

Inches 1 /" 3" 4" 5 /" 6 /" 7 /" 8 /" 9 /"

Millimeters 50 76 102 128 154 180 206 232

Asymmetrical Board Widths for

¾

"

Box Joints

Total Pins & Sockets

4 6 8 10 12

Inches 2 /" 4 /" 5 / " 7 /" 8 /"

Millimeters 75 113 151 189 227

Symmetrical Board Widths for

½

"

Box Joints

Total Pins & Sockets

3 5 7 9 11 13 15 17 19

Inches 1 /" 2 /" 3 /" 4 /" 5 /" 6 /" 7 /" 8 /" 9 / "

Millimeters 37 63 89 115 141 167 195 219 245

B

B

D

D

C

C

A

A

Asymmetrical

Symmetrical

Socket Board

Pin Board

Socket Board

Pin Board

B975 User Guide

Chapter 5 Routing Box Joints

27

5-5

Board Width Selection Board widths indicated in the chart will produce full size
pins and sockets at each board edge, for symmetrical or asymmetrical joints. Symmetrical
joint board widths may be reduced as required, resulting in smaller but equally sized pins
and sockets at each board edge. If board widths are reduced for asymmetrical joints, one
edge of the board will have a full size pin and socket while the other board edge will have
a smaller pin and socket. This may result in an unattractive joint.

 IMPORTANT:

Read this chapter

before routing any boards.

5-6 Making a Box Prepare

four similar boards 3/4" thick ×
5-3/16" wide by about 12" long
[19mm×133mm×305mm], and two
test boards, about 4"[100mm] wide
and the same thickness.

Note: Boards of different thicknesses
may also be joined.

Symmetrical

Asymmetrical

Full size

pins and sockets

Full size

pins and sockets

When a symmetrical board width is reduced,
the joint will have smaller, but equal sized
pins and sockets at each edge of the board.

Width specified in the board width chart
results in full size pins and sockets at each
edge of the board.

Width specified in the board width chart
results in a full size pin at one edge of the
board, and a full size socket at the other edge
of the board.

When an asymmetric board width is reduced,
the joint will have a full size pin and socket at
one edge of the board, and a reduced size pin
and socket at the other edge of the board.

When the board width is reduced further,
the result is very narrow and fragile pins at
each edge of the board.

When the board width is reduced further,
the result is a very narrow and fragile pin at
one edge of the board.

Small pins can break easily

Small pin

can break easily

Reduced size pins and sockets

Reduced size

pin and socket

28

B975 User Guide

Chapter 5 Routing Box Joints

5-9 Socket and pin boards may

differ in thickness. Always use
the mating pin or socket board to
determine depth of cut. Hold it flush
under the template and mark a line
on the board, indicating depth of
cut.

5-7 Routing a Test Fit Joint

Test joints are always routed with the
eBush set at the 5 position.

Retighten the eBush nut after each
guide bushing adjustment.

5-8 Clamp one of the test boards

in the vice. Using the 3/4" side of
the jig, position the left end of the
jig over the test board and clamp in
place.

Board alignment is not important
when routing a test fit.

B975 User Guide

Chapter 5 Routing Box Joints

29

5-11

Rout the first test board.

Hold the router firmly as you rout
straight in and out of each template
opening. Be sure the e10 guide
bushing touches the left side of the
template opening on the way in, and
the right side on the way out.

Do not

rotate the router.

5-12 Remove the jig from the first

test board and repeat the process for
the second test board.

5-10 Place the router on the jig and

adjust the tip of the bit up or down
until it’s at the center of the line.
Rotate the bit and collet to ensure
it spins freely and does not contact
the eBush.

30

B975 User Guide

Chapter 5 Routing Box Joints

5-14

Each increment on the
eBush changes the joint glue line
fit by 0.002"[0.05mm]. Half an
increment, a mere 0.001"!

Retighten the eBush nut after
each guide bushing adjustment.

5-13 Joint Fit Adjustment

Assemble the test boards. If the joint
is too loose, use the pin wrench and
turn the eBush to a higher number

and rout two fresh board ends.

If the joint is too tight, turn the
eBush to a lower number and rout

two fresh board ends.

One or two test cuts should produce
a perfect fit.

5-15 Use these eBush diagrams

to record the settings you used to
achieve perfect joint fit. The first
eBush is simply an example of how
to record your setting.

35

TOO LOOSE

TIGHTEN

TOO TIGHT

LOOSEN

SAMPLE

June7, 1/2"joint

Maple, 160 bit

B975 User Guide

Chapter 5 Routing Box Joints

31

5-16 Joint flushness is determined

by the depth of cut.

If the joint is over flush, raise the bit
to decrease the depth of cut.

If the joint is under flush, lower the
the bit to make a deeper cut.

OVER FLUSH UNDER FLUSH

5-17

Lay out the four boards for the
box. Mark an S (socket board) on two
of the boards and a P (pin board) on

two boards.

Also mark the common board edges
that will go against the side stop.
These edges will align at the top
or bottom edge of the box when
assembled.

A

B

5-18

Side Stop Positions

The
side stop is used to position the pin
and socket boards. Put the socket
board stop in the S position Afor
all socket boards. The pin board stop
is put in the P position B for all pin
boards.

P

P

S

S

P

S

S

P

32

B975 User Guide

Chapter 5 Routing Box Joints

5-19

Routing the Socket Board

With the 3/4" side of the template
facing you, lift the thumb lock A
and move the socket board stop fully
to the left. Lock it in position.

5-20 Symmetrical Joints

Clamp the first socket board in the
vice. With the left edge of the board
in the first template opening, position
the jig over the socket board, leaving
equal amounts of the board showing
at each edge. Clamp the jig in place.

5-21 Asymmetrical Joints

Clamp the first socket board in the
vice. With the left edge of the board
in the first template opening, position
the jig over the socket board.

Note:

Asymmetrical boards cannot
be centered under the template.
With the side stop fully retracted,
align the left edge of the board with
the left edge of the groove in the
beam.

S

A

S

Overhead View

Front View

B975 User Guide

Chapter 5 Routing Box Joints

33

5-22 For both joint types, lift
the thumb lock A, and move the

socket board stop to the right until
it touches the board. Press the thumb
lock to lock it in place.

The side stop remains locked in place
for all socket and pin board routing.

5-23 Socket and pin boards can

be different thicknesses. Always use
the mating pin or socket board to
determine depth of cut.

In this case, hold the pin board flush
under the template and draw a line
on the socket board, indicating
depth of cut.

5-24

Place the router on the jig and
adjust the tip of the bit up or down
until it’s at the center of the line.
Rotate the bit and collet to ensure
it spins freely and does not contact
the eBush.

A

S

S

S

34

B975 User Guide

Chapter 5 Routing Box Joints

5-25 Hold the router firmly, as

you rout straight in and out of each
template opening.

Be sure the e10 guide bushing
touches the left side of the template
opening on the way in, and the
right side on the way out. Do not

rotate the router. Keep the router
handles parallel to the jig while
routing.

5-26

There will now be a full socket

at each edge of the socket board.

Turn the socket board end for end,
keeping the same board edge against
the side stop.

Rout the other end of the board.
Repeat for the second socket board
and remove the jig from the socket
board.

S

5-27 Routing the Pin Board

The pin board must be offset relative
to the socket board. Do not release
the thumb lock. Simply flip the pin
board stop to the P position.

B975 User Guide

Chapter 5 Routing Box Joints

35

5-29 Use the socket board to mark

the depth of cut. If all your boards
are the same thickness, the depth is
already set.

5-30

Place the router on the jig and
adjust the tip of the bit up or down
until it’s at the center of the line.

P

P

5-28 With the side stop set,

position the jig over the pin board,
and slide it over until the side stop
touches the board edge. Clamp in
place.

P

36

B975 User Guide

Chapter 5 Routing Box Joints

5-32

There will now be a full pin

at each edge of the board.

Turn the pin board end for end,
keeping the same board edge against
the side stop, and rout the other end
of the board. Repeat for the second
pin board.

5-33 Assemble the box, keeping the

marked board edges aligned.

■

P

P

P

S

S

5-31 Hold the router firmly as

you rout straight in and out of each
template opening. Be sure the e10
guide bushing touches the left side
of the template opening on the way
in, and the right side on the way out.

Do not rotate the router.

P

37

B975 User Guide

CHAPTER 6

Routing Wider Boards

This chapter assumes you are familiar with all
procedures in this user guide and you have
established good joint fit and flushness using
test boards before routing wide boards.

6-1 Getting Started The Box Joint & Beehive Jig can be used to rout box joints on

boards wider than the jig width, up to 17-13/16"[453mm]. This is accomplished easily
using a step-over cam and simple procedure. This example uses 3/4" box joints on 3/4"

thick boards. Procedures for routing 1/2" and 3/4" joints are identical.

6-2

Parts Required 3/4" and 1/2" box joints are routed with the included Leigh

No.160 1/2" straight bit and the Leigh e10 guide bushing (eBush).

No other bit diameter

and guide bushing combination may be used.

Maximum board thickness for both
joint sizes is 13/16"[20.6mm]. Depth of cut can be increased beyond the board thickness
for raised joints. Note: Optional 1/2" diameter spiral upcut bits may also be used.

P

1/2"

1/2"

1/4"

3/4"

0"

13/16"

160
180

Depth of Cut

Item No. Carbide Tipped

Bit Diameter

Item No.

Spiral HSS (Optional)

Item No. Spiral Solid Carbide (Optional)

180C

Bit Cutting Depth

IMPORTANT SAFETY NOTE

Before using your Leigh B975, you must
have completed the preparatory steps
listed in the previous pages, including
reading the jig safety recommendations
in Chapter 2.

160

(included)

e10

Guide Bushing

180 180C

(Optional Bits)

1-1/4"

1/2"

1/2"

1-3/4"

1/2"

1-5/8"

38

B975 User Guide

Chapter 6 Routing Wider Boards

6-4

Board Width Selection Board widths are determined by the total number of

pins and sockets in the joint design. Use this chart to choose your board width.

Board widths indicated in the chart below will produce full size pins and sockets at each
board edge for symmetrical joints. Symmetrical joint board widths may be reduced as
required, resulting in smaller but equally sized pins and sockets at each board edge.

6-3

Joint layout

Review the drawing below.

Symmetrical

joints have pins

A

on

both edges of the pin board, and sockets

B

on both edges of the socket board.

Note:

Only symmetrical joints can be routed on wider boards. Asymmetrical joints are not

possible on wide boards.

A

B

B

A

Symmetrical Board Widths for

¾

"

Box Joints on Wider Boards*

Total Pins & Sockets

3 5 7 9 11 13 15 17 19 21 23

Inches 2 /" 3 /" 5 /" 6 /" 8 /" 9 /" 11 /" 12 /" 14 / " 15 /" 17 /"

Millimeters 56 94 132 170 208 246 284 322 360 398 437

Symmetrical Board Widths for

½

"

Box Joints on Wider Boards*

Total Pins & Sockets

3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35

Inches 1 /" 2 /" 3 /" 4 /" 5 /" 6 /" 7 /" 8 /" 9 / " 10 /" 11/" 12 /" 13 /" 14 /" 15 /" 16 /" 17 /"

Millimeters 37 63 89 115 141 167 193 219 245 271 297 323 349 375 401 427 453

*Note: Wider boards are not possible when using a router table.

Full size

pins and sockets

When a symmetrical board width is reduced,
the joint will have smaller, but equal sized
pins and sockets at each edge of the board.

Width specified in the board width chart
results in full size pins and sockets at each
edge of the board.

When the board width is reduced further,
the result is very narrow and fragile pins at
each edge of the board.

Small pins can break easily

Reduced size pins and sockets

B975 User Guide

Chapter 6 Routing Wider Boards

39

6-

5

Wood Preparation

In this
example we are using boards with
the following dimensions: 3/4" x
17-3/16" x 24" [19mm x 437mm
x 203mm].

Mark the pin and socket boards and
the board edge that goes against the
side stop.

IMPORTANT:

Read this whole
chapter before routing any
boards.

Symmetrical Board Widths for

¾

"

Box Joints on Wider Boards*

Total Pins & Sockets

3 5 7 9 11 13 15 17 19 21 23

Inches 2 /" 3 /" 5 /" 6 /" 8 /" 9 /" 11 /" 12 /" 14 / " 15 /" 17 /"

Millimeters 56 94 132 170 208 246 284 322 360 398 437

6-6 Boards wider than 9-11/16"

[246mm] cannot be centered under
the template. Therefore a narrower
board must be used to position the
side stop. Select a narrow board width
from the chart and cut a board to that
width, in this case, 3-11/16"[94mm].

S

P

6-

7

With the socket board stop fully
retracted, clamp the narrow board
in the vice and center the left end of
the template over the board, leaving
equal amounts of the board showing
at each edge. Clamp the jig in place.

40

B975 User Guide

Chapter 6 Routing Wider Boards

6-

8

Slide the socket board stop until
it touches the edge of the board and
lock in place. The side stop is now
set.

Remove the jig from the narrow
board, and remove the board from
the vice.

6-10

Routing the Socket Board

Clamp the wide socket board in the
vice. Make sure the right hand clamp

A

will not interfere with the router.
Wide and heavy boards should be
secured with an extra clamp B, or
supported from the bottom.

S

4-3/4"

5-3/16"

Symmetrical Board Widths for

¾

"

Box Joints on Wider Boards*

Total Pins & Sockets

3 5 7 9 11 13 15 17 19 21 23

Inches 2 /" 3 /" 5 /" 6 /" 8 /" 9 /" 11 /" 12 /" 14 / " 15 /" 17 /"

Millimeters 56 94 132 170 208 246 284 322 360 398 437

6-9

Boards Widths Less Than

the Chart Width

For example:

If the chart width is
17-3/16"[437mm] and your board
width is 16-3/4"[425mm], the
difference is 7/16"[11mm]. Select a
narrow board width from the chart,
in this case 5-3/16"[132mm], and
reduce its width by the difference,
7/16"[11mm]. The narrower board
width is now 4-3/4"[121mm]. Cut
a board to that width and use the
narrow board for step 6-7.

B975 User Guide

Chapter 6 Routing Wider Boards

41

6-11 Set the depth of cut using a

board the same thickness as the pin
board, in this case 3/4". Holding the
board flush under the template, draw
a line on the socket board.

6-12 Place the router on the jig and

adjust the tip of the bit up or down
until it’s at the center of the line.
Rotate the bit and collet to ensure
it spins freely and does not contact
the eBush.

6-13

Now, hold the router firmly,
as you rout straight in and out of all
template openings.

Do not rotate the router.

Be sure the e10 touches the left side
of the template opening on the way
in, and the right side on the way out.



Do not remove the jig from the

board.

S

S

S

42

B975 User Guide

Chapter 6 Routing Wider Boards

A

6-14 There will now be sockets

on the left side of the board.
The remaining part of the board is
routed next, but first...

6-15 ...point the tip of the 3/4" cam

to the back of the jig and insert it in the
extreme right hand template opening.

6-16 Turn the cam clockwise

until the bottom part of the cam A
touches the right side of the last
routed opening of the board.

Leave the cam in place.

S

B975 User Guide

Chapter 6 Routing Wider Boards

43

6-17 Unclamp the jig, flip the

board horizontally, and re-clamp in
the vice.

Position the jig on the board so the
right edge of the cam just touches the
inside right edge of the last routed
opening. Clamp the jig in place
making sure the right hand clamp
will not interfere with the router.
Remove the cam.

6-18 Rout the remaining part of

the socket board. Remove the jig
from the board and unclamp the
board from the vice.

6-19 To rout the other end of

the socket board, turn the board
horizontally and flip it end for end,
and re-clamp in the vice. Place the
jig on the board with the side stop
against the left board edge.

If you’re making a box, rout a second
socket board.

44

B975 User Guide

Chapter 6 Routing Wider Boards

6-20 Routing the Pin Board

Flip the pin board stop to the P
position. Place the jig on the board
and slide it to the right until the
left edge of the board touches the
pin board stop. Clamp the board in
place.

6-21 Socket and pin boards can be

different thicknesses. Hold a board
of the same thickness as the socket
board, flush under the template, and
draw a line on the socket board to
indicate depth of cut.

6-22 Place the router on the jig and

adjust the tip of the bit up or down
until it’s at the center of the line.
Rotate the bit and collet to ensure
it spins freely and does not contact
the eBush.

P

P

P

B975 User Guide

Chapter 6 Routing Wider Boards

45

6-23

Now, hold the router firmly,
as you rout straight in and out of
each template opening. Be sure the
e10 guide bushing touches the left
side of the template opening on the
way in, and the right side on the way
out.



Do not remove the jig from the

board.

6-24

There will now be pins on the
left side of the board. The remaining
part of the board is routed next, but
first...

6-25 ...point the tip of the 3/4" cam

to the back of the jig and insert it
in the extreme right hand template
opening.

Turn the cam clockwise until the
bottom part of the cam A touches
the right side of the last routed
opening of the board.

Leave the cam in place.

P

P

A

46

B975 User Guide

Chapter 6 Routing Wider Boards

6-26 Unclamp and flip the board

horizontally. Re-clamp in the vice.

The stepover cam A, not the side

stop, is used to position the jig on the

board. There will be a small gap B
between the side stop and the board.
Place the jig on the board with the
edge of the cam just touching the
inside right edge A of the last routed
opening of the pin board. Clamp the
jig in place. Rout the rest of the pin
board.

6-27 Remove the jig and unclamp

the board from the vice.

To rout the other end of the pin
board, turn the board horizontally
and flip it end for end, and re-clamp.
Place the jig on the board with the
side stop against the left board edge.

If you’re making a box, rout a second
pin board.

6-28 Assemble the joint, keeping

the marked board edges aligned.

■

A

P

S

47

B975 User Guide

CHAPTER 7

Router Table
Operation

This chapter assumes you have set up your
jig following the Mounting & Assembly
instructions in Chapter 4, Steps 4-17 to
4-22. You should also be familiar with all
procedures in this user guide.

IMPORTANT SAFETY NOTE

Before using your Leigh B975, you must
have completed the preparatory steps
listed in the previous pages, including
reading the jig safety recommendations
in Chapter 2.

7-1 Getting Started The B975 can be used to rout box joints on a router table, on

boards up to a maximum width of 9-11/16"[246mm]. This example uses 3/4" box joints
on 3/4" thick boards. Procedures for routing 1/2" and 3/4" joints are identical.

7-2

Parts Required 3/4" and 1/2" box joints are routed with the included Leigh

No.160 1/2" straight bit and the Leigh e10 guide bushing (eBush).

No other bit diameter

and guide bushing combination may be used.

Maximum board thickness for both
joint sizes is 13/16"[20.6mm]. Depth of cut can be increased beyond the board thickness
for raised joints. Note: Optional 1/2" diameter spiral upcut bits may also be used.

S

1/2"

1/2"

1/4"

3/4"

0"

13/16"

160
180

Depth of Cut

Item No. Carbide Tipped

Bit Diameter

Item No.

Spiral HSS (Optional)

Item No. Spiral Solid Carbide (Optional)

180C

Bit Cutting Depth

160

(included)

e10

Guide Bushing

180 180C

(Optional Bits)

1-1/4"

1/2"

1/2"

1-3/4"

1/2"

1-5/8"

B975 User Guide

Chapter 7 Router Table Operation

48

7-3 Router Table Requirements Router tables are typically used with a bearing or

fence, however, the Leigh B975 is guided around a guide bushing mounted in the router
table. Leigh eBushes (guide bushings) are designed around the 1-3/8" diameter industry
standard. See specifications below.

Leigh eBush and Nut

Router Table

eBush

Insert Ring

Insert Plate

7-4 Insert Ring To install

the eBush to your router table
insert plate, you may need a
1-3/8" diameter counter bore
insert ring. Check with your
router table or insert plate (router
lift) manufacturer, as to what
adaptation, if any, is required.

1

3

/16"

0.100"

1

3

/8"

1

3

/8"

1

3

/16"

0.100"

B975 User Guide

Chapter 7 Router Table Operation

49

A

7-6 Install the e10 guide bushing

in the router table. Turn the e10 to
align the 5 position with the line A
you’ve just drawn.

Using an initial setting of 5 allows
adjustment for a looser or tighter
joint fit. This line will also help you
guide the jig.

C

A

B

7-5

Draw a reference line with a
permament pen on the router table,
centered on the guide bushing
opening at 12 o’clock and 6 o’clock
(shown in red for clarity only).

This will ensure correct orientation
of the eBush to the insert ring A,
the insert plate B, and the router
table C.

7-7

eBush adjustments are made
with the included pin wrench.
Markings on the eBush indicate
which way to turn it for a looser or
tighter fit. See Chapter 3.

Remember, every time you adjust
the eBush you must re-tighten the
eBush nut.

B975 User Guide

Chapter 7 Router Table Operation

50

1-1/2"

4-1/2"

3/4"

7-8

Before using the jig on a router

table, handles must be attached to the
ends of the beam. Cut two pieces of
wood to the dimensions indicated
and attach with screws.

The handles will keep your fingers
safely away from the bit and help
control the jig during routing.

7-9 With the router unplugged,

install the No.160 straight bit to the
router and tighten the collet nut.



Be sure the bit spins freely
within the guide bushing before
reconnecting the power.

7-10 Reminder: If you haven’t

already done so, you must rout
grooves on each side of the beam
(see Chapter 4, steps 4-17 to 4-22).

B975 User Guide

Chapter 7 Router Table Operation

51

7-11 Do not turn or rotate the jig

as you rout. Keep the jig parallel to
the router table and go straight in and
straight out of each template opening.

7-12 Never tilt the jig. Keep the jig

flat on the router table at all times.

7-13

Chips and sawdust are thrown
out at high speed. Always stand
and use the jig away from chip and
sawdust ejection.

Operator’s

Position

B975 User Guide

Chapter 7 Router Table Operation

52

7-14 Joint layout

Symmetrical joints have pins

A

on both edges of the pin board, and

sockets

B

on both edges of the socket board. Asymmetrical joints have a socket Con one

edge and a pin Don the other edge of each board.

7-15

Board Width Selection

Board widths are determined by the total number of pins
and sockets in the joint design and whether the joint is symmetrical or asymmetrical. Use this
chart to determine board widths up to

9-11/16"[246 mm]

.

Symmetrical Board Widths for

¾

"

Box Joints

Total Pins & Sockets

3 5 7 9 11 13

Inches 2 /" 3 /" 5 /" 6 /" 8 /" 9 /"

Millimeters 56 94 132 170 208 246

Asymmetrical Board Widths for

½

"

Box Joints

Total Pins & Sockets

4 6 8 10 12 14 16 18

Inches 1 /" 3" 4" 5 /" 6 /" 7 /" 8 /" 9 /"

Millimeters 50 76 102 128 154 180 206 232

Asymmetrical Board Widths for

¾

"

Box Joints

Total Pins & Sockets

4 6 8 10 12

Inches 2 /" 4 /" 5 / " 7 /" 8 /"

Millimeters 75 113 151 189 227

Symmetrical Board Widths for

½

"

Box Joints

Total Pins & Sockets

3 5 7 9 11 13 15 17 19

Inches 1 /" 2 /" 3 /" 4 /" 5 /" 6 /" 7 /" 8 /" 9 / "

Millimeters 37 63 89 115 141 167 195 219 245

B

B

D

D

C

C

A

A

Asymmetrical

Symmetrical

Socket Board

Pin Board

Socket Board

Pin Board

B975 User Guide

Chapter 7 Router Table Operation

53

7-16 Board widths indicated in the chart on the previous page will produce full size pins and

sockets at each board edge, for symmetrical or asymmetrical joints. Symmetrical joint board
widths may be reduced as required, resulting in smaller but equally sized pins and sockets at
each board edge. If board widths are reduced for asymmetrical joints, one edge of the board will
have a full size pin and socket while the other board edge will have a smaller pin and socket.
This may result in an unattractive joint.

7-17 Making a Box

Prepare four similar boards 3/4" thick
× 5-3/16" wide by about 12" long
[19mm×133mm×305mm], and two test
boards, 3/4" thick by about 4"[100mm]
wide.

Note:

Boards of different thicknesses may

also be joined.

 IMPORTANT:

Read the whole chapter before routing any boards.

Symmetrical

Asymmetrical

Full size

pins and sockets

Full size

pins and sockets

When a symmetrical board width is reduced,
the joint will have smaller, but equal sized
pins and sockets at each edge of the board.

Width specified in the board width chart
results in full size pins and sockets at each
edge of the board.

Width specified in the board width chart
results in a full size pin at one edge of the
board, and a full size socket at the other edge
of the board.

When an asymmetric board width is reduced,
the joint will have a full size pin and socket at
one edge of the board, and a reduced size pin
and socket at the other edge of the board.

When the board width is reduced further,
the result is very narrow and fragile pins at
each edge of the board.

When the board width is reduced further,
the result is a very narrow and fragile pin at
one edge of the board.

Small pin

can break easily

Reduced size

pin and socket

Small pins can break easily

Reduced size pins and sockets

B975 User Guide

Chapter 7 Router Table Operation

54

7-18 Routing a Test Joint Test

joints are routed with the eBush
set at the 5 position. Tighten the
eBush nut after each guide bushing
adjustment.

7-19

Center a test board on the left
side of the 3/4" template, leaving an
equal amount overhang on each edge
of the board.

Clamp the board in place.

7-20 Slide the socket board stop

until it touches the edge of the board.
Secure the side stop with the thumb
lock.

B975 User Guide

Chapter 7 Router Table Operation

55

7-21 Socket and pin boards may

differ in thickness. Always use
the mating pin or socket board to
determine the depth of cut. In this
case, hold a pin board flush against
the template and draw a line on the
board, indicating depth of cut.

7-22 Place the router on the jig and

adjust the tip of the bit up or down
until it’s at the center of the line.
Rotate the bit and collet to ensure
it spins freely and does not contact
the eBush.

7-23 Rout straight in and out of

each template opening. Be sure the
e10 guide bushing touches the left
side of each template opening on the
way in, and the right side on the way
out. Do not rotate the jig.

Chips and sawdust can accumulate
between the template openings.
Check each routed slot to ensure it
has been routed completely. Remove
the board.

B975 User Guide

Chapter 7 Router Table Operation

56

7-24 Place the second test board

against the side stop and clamp in
place. Rout the board.

35

TOO LOOSE

TIGHTEN

TOO TIGHT

LOOSEN

7-25 Joint Fit Adjustment

Assemble the test boards. If the joint
is too loose, use the pin wrench and
turn the eBush to a higher number
and rout two fresh board ends.

If the joint is too tight, turn the
eBush to a lower number and rout
two fresh board ends.

Re-tighten the eBush nut after
each guide bushing adjustment.

7-26 Each increment on the

eBush changes the joint glue line
fit by 0.002"[0.05mm]. Half an
increment, a mere 0.001"!

B975 User Guide

Chapter 7 Router Table Operation

57

7-27 Use these eBush diagrams

to record the settings you used to
achieve perfect joint fit. The first
eBush is an example of how to record
your setting.

OVER FLUSH UNDER FLUSH

7-28

Joint flushness is determined

by the depth of cut.

If the joint is over flush, lower the bit
to make a shallower cut.

If the joint is under flush, raise the
bit to make a deeper cut.

Rout new test joints until fit and
flushness are perfect before routing
the final boards.

7-29 Making a Box

Lay out the four boards and mark
two pin boards and two socket
boards. Also, indicate the common
board edges that will go against the
side stop.

SAMPLE

June7, 1/2"joint

Maple, 160 bit

P

S

S

P

P

S

B975 User Guide

Chapter 7 Router Table Operation

58

7-30 Before clamping the first

socket board, ensure the socket board
stop is fully retracted, and locked in
place.

7-31 With the left edge of the board

in the first template opening, position
the socket board on the jig, leaving
equal amounts of the board showing
at each edge.

Clamp the jig in place.

7-32 Slide the socket board stop

until it touches the edge of the board,
and secure with the thumb lock.

The side stop remains locked in place
for all socket and pin board routing.

S

B975 User Guide

Chapter 7 Router Table Operation

59

7-35 Rout straight in and out of

each template opening. Be sure the
e10 guide bushing touches the left
side of the template opening on the
way in, and the right side on the way
out. Do not rotate the jig.

There will now be a full socket at
each edge of the board.

7-33

Hold a pin board flush against
the template and draw a line on the
board, indicating depth of cut.

7-34 Adjust the tip of the bit up or

down until it’s at the center of the
line.

S

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B975 User Guide

Chapter 7 Router Table Operation

60

7-36 Unclamp and flip the first

socket board end for end, keeping
the same board edge against the side
stop, and clamp in place. Rout in
each template opening.

Repeat the procedure for the second
socket board.

7-37 Routing the Pin Board

Flip the side stop to the pin board
stop position.

7-38 Place the first pin board on

the jig with its edge touching the pin
board stop and clamp in place.

S

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B975 User Guide

Chapter 7 Router Table Operation

61

7-41 Rout straight in and out of

each template opening. Be sure
the e10 touches the left side of the
template opening on the way in, and
the right side on the way out.

Do not

rotate the jig.

There will now be a full pin at each
edge of the board.

7-40 Adjust the tip of the bit up or

down until it’s at the center of the
line.

7-39 Hold a socket board flush

against the template and draw a line
on the board, indicating depth of
cut.

P

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B975 User Guide

Chapter 7 Router Table Operation

62

7-43 Remove the board from the

jig and assemble the joint, keeping
the marked board edges aligned. ■

7-42 Unclamp and flip the first

pin board end for end, keeping the
same board edge against the side
stop, and clamp in place. Rout in
each template opening.

Repeat the procedure for the second
pin board.

P

S

P

63

e10
eBush

Nut for
e10 eBush

703

702R

706R

705R

710

721

RA1100

RA1126

704R

702

RA1129

Set includes Bosch
Adapter RA1100
and its holder

Bosch RA1126

}

The B975 requires a router fitted with the e10 guide bushing, and possibly an adapter
to fit the bushing to the router. Leigh offers the following guide bushing adapters that fit
many common routers.

See the list of routers in the chart on the next page. For a complete list of routers see

www.leighjigs.com.

FOR HAND HELD ROUTERS ONLY

B975 User Guide

CHAPTER 8

Guide Bushing Adapter Selection

64

64

B975 User Guide

Chapter 8 Guide Bushing Adapter Selection

1 BRAND 2 ROUTER MODEL 3 ROUTER ADAPTER 4 e10 ◆

BLACK & DECKER

All Professional, HD1250, RP400K, 7614 Not Required e10

6200 720673-00 e10

SR100, 7AEE, KW780 series, KW800, KW850 710 e10

BOSCH

90085, 90088, 90098, 90140, 90150, 90300, 90303, 90305, 91264 Aftermarket base plate required e10

1600, 1601, 1602, 1603, 1604, 1606, B1350 RA1110 e10

North American ROUTERS PRODUCED AFTER mid-2010: 1613EVS, 1613AEVS, 1617,
1617EVS, 1618, 1618EVS, 1619EVS, MR23EVS, MRC23EVS, MRF23EVS, MRP23EVS

RA1126 quick change adapter and

RA1100 bushing adapter req’d

e10

North American ROUTERS PRODUCED BEFORE mid-2010 and others available

worldwide that include the RA1126 adapter: 1613(EVS)(AEVS), 1614(EVS), 1617EVS,

1618EVS, 1619EVS, B1450, GOF900(CE)(ACE), GOF1200, GOF1250(CE)(LCE),

GOF1300(CE)(ACE), GOF1600CE, GOF2000CE, GMF1400, GMF1600CE, POF800ACE,

POF1100AE, POF1200AE, POF1400ACE

RA1100 e10

1611, 1611EVS, 1615, 1615EVS, B1550, GOF1600, GOF1700ACE 702 e10

CRAFTSMAN

(SEARS)

All non-plunge models Aftermarket base plate required e10

135275070 Plunge See Skil 1823 or 1835

Other plunge models 702 e10

MD11 Plunge & Fixed Base. MD9.5 Fixed Base Not Required e10

DEWALT

DW610, DW616, DW618 Not Required e10

DW613, DW615(UK) 710 e10

DW614, DW615, DW621, DW624, DW625, DW626 N. America Only, Supplied w/router e10

DW621K, DW622 and DW626 outside N. America 706R e10

DW625 Type 1,2,3,5 outside N. America 702 e10

DW624 & DW625 Type 4 outside N.America, DW625EK 702R e10

FEIN RT1800 Supplied w/router e10

FESTOOL

OF1E , OF2E, OF650, OF900E ,OF1000, OF1010E 704R e10

OF2000, OF2000E 705R e10

OF1400 and OF2200 North America Only Supplied w/router e10

OF1400 Outside North America 493566 e10

OF2200 Outside North America

494627 O-ring may be required

to keep bushing centered

e10

FREUD FT1700(2), FT2000, FT2200, FT3000 721 e10

HITACHI

TR8, TR12, FM8, M8, M12 Series 325211 OR 703 e10

M12VC, KM12SC, KM12VC Not Required e10

M12SA2, M12V2 325224 e10

MAKITA

M363, MRP090, RP1800(F), RP1801(F), RP2300(FC), RP2301(FC), 3612C Europe Qk Fit Base

721 e10

3600, 3606, 3608, 3612, 3612B, 3612BR, 3612C N. America, 3620, 3621, RP0900,

RP900K

703 e10

3601B 321 493-1 e10

RP0910, RP1110C 706R e10

RF1100, RF1101, RD1100, RD1101, RP1101 Not Required e10

MASTERCRAFT

Please contact Leigh for assistance

MILWAUKEE

5615, 5616, 5619 49-54-1040

(replacement base)

e10

5625 49-54-1026

(replacement base)

e10

5670 Not Required e10

PORTER CABLE

(ROCKWELL)

All Not Required or Supplied w/router e10

RIDGID R2930 (for all others, please contact Leigh for assistance) 704R e10

RYOBI

R30, R50, R150, R151, RE155, R500, R501, R502 703 e10

R600, R601, RE600, RE601 702 e10

R160, R161, R162, R163K, R165, R170,

R175, RE175, R180, R180PL, R181, R185, ERT1150

706R e10

SKIL

1823 or 1835 91803 e10

SK1810, 1815, 1820, 1825 RAS140 e10

All others Aftermarket base plate required e10

TREND T3, T4, T5, T9, T10, T11–UniBase required 710 e10

TRITON

TRC001 TGA006 or 704R e10

JOF001, MOF001, TRA001

Accessory Kit (includes adapter)

TGA001 or TGA150

e10

DIRECTIONS

A. Locate router maker and router model in Columns 1 and 2.
B. Locate adapter required for your router in Column 3.

• Order Leigh adapters (part no’s in red) in Column 3 from Leigh.

• Order Bosch adapters RA1100 and RA1126 in Column 3 from Leigh or
your Bosch dealer.

• Order all other adapters from the router manufacturer’s dealer.

Note: Adapter mounting screws are included with router.

C. Note:

◆ The

e10 elliptical guide bushing (5/8"[15.8mm]) shown
in column 4 is supplied with the B975 jig. Order only if you require a
replacement.

Adapters for Router Tables

Leigh guide bushings and eBushes are based on the industry standard 1-3/8"
2-piece design. Most router tables have adapters that accept these standard
guide bushings. If your router table does not have a suitable adapter, please
check with the router table manufacturer.

65

Our Commitment to You Leigh Industries takes pride in its commitment to providing

excellence in customer service and support. This user guide is designed to provide you with
the answers to any questions you have. However, if you require assistance, please feel free
to contact customer service/technical support below or a distributor listed on the next page.

B975 USER GUIDE

CHAPTER 9

Customer Support

EMAIL/WEB

Customer Service

[email protected]

Technical Support

[email protected]

Website

www.leighjigs.com

Manufacturer: Canada/USA

NOTE:

Email can be useful, but technical

queries usually raise queries from us.
A phone call is the quickest and most
convenient way to get queries answered,
either directly to Leigh (toll free in North
America) or to your national distributor.

–Thanks!

TEL/FAX
Customer Service

and Technical Support

800-663-8932

(Canada/USA)

604-464-2700 (Tel.)
604 464-7404 (Fax.)

MAILING ADDRESS

Leigh Industries Ltd.
P.O. Box 357
Port Coquitlam, B.C.
Canada V3C 4K6

LOCATION

Leigh Industries Ltd.
1615 Industrial Ave.
Port Coquitlam, B.C.
Canada V3C 6M9

Distributors listed on next page.

66

66

B975 User Guide

Chapter 9 Customer Support

AUSTRALIA & NEW ZEALAND

Maxis Distribution
128 Ingleston Rd., Wakerley, Qld., 4154
Australia
Tel: [phone]
Tel (Int.): [phone]
Email: [email protected]
Web: www.maxis.com.au

CHINA

Harvey Industries Co., Ltd.
68-10 Suyuan Avenue
Jiangning District Nanjing 211100, China
Tel: [phone]
Fax: [phone]
Email: [email protected]
Website: www.harveyworks.cn

FRANCE

Ets Bordet
98 Rue Louis Ampère, 93330
Neuilly Sur Marne, France
Tel: [phone]
Email: [email protected]
Web: www.bordet.fr

GERMANY, AUSTRIA & SWITZERLAND

Hacker GmbH
Holzbearbeitungsmaschinen
Traberhofstraße 103 D-83026 Rosenheim,
Deutschland
Tel: [phone]
Fax: [phone]
Email: [email protected]
Web: www.leigh.de

ITALY

Ferrari Macchine Legno SRL
Via Gallarata 74/76/78
20019 Settimo M.se (MI) Italy
Tel: [phone]
Fax: [phone]
Email: [email protected]
Web: www.ferrarimacchine.com

JAPAN

Off Corporation Inc.
323-1 Yanbara, Shimizu-ku, Shizuoka-shi
Shizuoka-ken, Japan 424-0002
Tel: [phone]
Fax: [phone]
Email: [email protected]
Web: www.off.co.jp

KOREA

Leigh Korea
665-3, Munhyung-Ri, Opo-Eup, Kwangju-Si,
12774, South Korea
Tel: [phone]
Fax: [phone]
Email: [email protected]
Web: www.leigh.co.kr

NETHERLANDS, BELGIUM
& LUXEMBOURG

Houtbewerking Krielaart
9217RR Nijega, Netherlands
Tel: [phone]
Email: [email protected]
Web: www.leighjigs.nl

RUSSIA

Unicom Ltd.
Nikitskij Boulevard 12
Moscow, 119019, Russia
Tel: [phone]
Email: [email protected] (Russia)
Web: www.leighjigs.ru (Russia)

SOUTH AFRICA

Hardware Centre
PO Box 4059, Randburg 2125
South Africa
Tel: [phone]
Fax: [phone]
Email: [email protected]
Web: www.hardwarecentre.co.za

SWEDEN

Toolbox Sweden AB
Bruksgatan 3, S-597 30
Atvidaberg, Sweden
Tel: [phone]
Fax: [phone]
Email: [email protected]
Web: www.toolbox.se

UNITED KINGDOM & IRELAND

Axminster Tools & Machinery
Headquarters, Unit 10, Weycroft Avenue
Axminster, Devon
EX13 5PH United Kingdom
Tel: [phone]
Text: 07786 200699
Email: [email protected]
Web: www.axminster.co.uk/leigh

Distributors

© 2017 Leigh Industries Ltd. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any
form or by any means, electronic, mechanical, recording, or otherwise, without the prior written permission of Leigh Industries Ltd. 11/2017

B975 User Guide

67

Chapter 9 Customer Support

Satisfaction Guarantee

Products purchased directly from Leigh carry a 90-day Customer Satisfaction Guarantee.
Those purchased from an authorized Leigh dealer may also carry a Customer Satisfaction
Guarantee; see your Leigh dealer for details. Proof of purchase is required.

Leigh Industries Ltd. warrants that this product is free of defects
in factory workmanship and materials during normal use. If this
product fails during normal use because of such a defect, Leigh
Industries Ltd. will, at its option, repair or replace, free of charge,
any part or parts shown to be so defective. This warranty applies
to the original owner, who purchases for use and not for resale,

Leigh stands behind its products with a 5 year limited warranty. Contact Leigh for warranty
service. Proof of purchase may be required. Postage is to be prepaid and insured to Leigh
Industries Ltd. Return shipping is by means chosen by Leigh Industries Ltd.

for a period of five years from the date of purchase. Failure resulting from alteration,
modification, misuse, abuse or neglect or after repairs have been attempted or made
by others will result in no coverage. The scope of this warranty is limited. This warran­ty constitutes the sole and exclusive remedy of the purchaser against Leigh Industries
Ltd. from whatever cause, including without limitation, any cause relating to a breach
of condition, representation or warranty, express or implied, whether by statute, com­mon law or otherwise, or for damages for negligence or for any other claim for death,
personal injury, property damage or economic loss of any kind, direct or consequen­tial, arising out of the purchase, installation or use of this product. This warranty shall
be governed by and construed in accordance with the laws in the Province of British
Columbia, Canada which shall be deemed to be the proper law hereof.

5 Year Warranty

Printed in Taiwan

Symmetrical

joints have pins Aon both

edges of the pin board, and socketsBon
both edges of the socket board.

Asymmetrical

joints have a pinCon one

edge and a socketDon the other edge of
each board.

B

B

C

D

PIN BOARD PIN BOARD

SOCKET BOARD SOCKET BOARD

C

Quick Reference B975 Board Width Selection

A

A

D

Symmetrical Board Widths for

¾

"

Box Joints on Wider Boards*

Total Pins & Sockets

3 5 7 9 11 13 15 17 19 21 23

Inches 2 /" 3 /" 5 /" 6 /" 8 /" 9 /" 11 /" 12 /" 14 / " 15 /" 17 /"

Millimeters 56 94 132 170 208 246 284 322 360 398 437

Symmetrical Board Widths for

½

"

Box Joints on Wider Boards*

Total Pins & Sockets

3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35

Inches 1 /" 2 /" 3 /" 4 /" 5 /" 6 /" 7 /" 8 /" 9 / " 10 /" 11/" 12 /" 13 /" 14 /" 15 /" 16 /" 17 /"

Millimeters 37 63 89 115 141 167 193 219 245 271 297 323 349 375 401 427 453

*Note: Wider boards are not possible when using a router table.

Symmetrical Board Widths for

¾

"

Box Joints

Total Pins & Sockets

3 5 7 9 11 13

Inches 2 /" 3 /" 5 /" 6 /" 8 /" 9 /"

Millimeters 56 94 132 170 208 246

Asymmetrical Board Widths for

½

"

Box Joints

Total Pins & Sockets

4 6 8 10 12 14 16 18

Inches 1 /" 3" 4" 5 /" 6 /" 7 /" 8 /" 9 /"

Millimeters 50 76 102 128 154 180 206 232

Asymmetrical Board Widths for

¾

"

Box Joints

Total Pins & Sockets

4 6 8 10 12

Inches 2 /" 4 /" 5 / " 7 /" 8 /"

Millimeters 75 113 151 189 227

Symmetrical Board Widths for

½

"

Box Joints

Total Pins & Sockets

3 5 7 9 11 13 15 17 19

Inches 1 /" 2 /" 3 /" 4 /" 5 /" 6 /" 7 /" 8 /" 9 / "

Millimeters 37 63 89 115 141 167 195 219 245