INCRA
INCRA’S PATENTED LEAD SCREW TECHNOLOGY FOR THE ULTIMATE IN PRECISION WOODWORKING CAPABILITY
OWNER’S MANUAL
Please read this owner’s manual and keep it at
hand for reference.
From typical fence system applications such as
grooving, dadoing, rabbeting, edge forming, and
ripping to advanced joinery functions, your new
INCRA LS Positioner represents the
ultimate in quality precision
tooling for your dream
shop. Incra’s patented lead
screw driven positioning
element sets a new
standard for positioning
accuracy guaranteeing
fence placement to within
two thousandths of an inch
over the full range of the
fence with zero repeatability error.
This translates to perfect cutting results,
regardless of skill level – rst time, every time. If
you are interested in joinery for your next project, you
need not look further than your new LS Positioner for
superior box joint and dovetail capability. Whether
you are cutting a simple equally spaced box joint,
or the exquisite INCRA Double Dovetail, you’ll nd
the simplicity of our template guided joinery system
makes other joint making tools obsolete.
CONTENTS
Systems Configurations ........ 2
Safety .................... 4
Getting Acquainted........... 4
Setup .................... 5
Pro II Fence Installation ....... 6
Wonder Fence Installation ....... 8
Shop Stop ................. 10
Operation ................. 12
Applications................ 14
Adjustments................ 14
Auto Centering Scale.......... 15
Warranty ................. . 16
LS Positioner Base
Right Angle Fixture
LS Positioner Carriage
LS Positioner “Standard System”
28” Pro II Fence
13” Telescoping Stop Extender Bar with Stop
Incra Shop Stop
2 INCRA Woodworking Tools & Precision Rules
Hi-Rise Fence Cap
Right Angle Fixture
Note: Also available for current Ultra owners, the Incra LS
Upgrade Package includes only the LS Positioner Carriage
Wonder Fence
Heavy Duty Split Fence
and Base as shown in Fig. 1 on page 5.
LS Positioner Base
LS Positioner “Super System”
LS Positioner Carriage
Incra Shop Stop
13” Telescoping Stop Extender Bar with Stop
28” Pro II Fence
INCRA LS Positioner Owner’s Manual 3
SAFETY
Important safety instructions for using the INCRA LS Positioner
Before using the INCRA LS Positioner, read and
follow all of the instructions and safety information
in this manual.
When using the INCRA LS Positioner in
conjunction with any other tool, rst read and
follow all instructions and safety information in that
tool’s owner’s manual.
When mounted to a table surface, make sure that
all of the mounting screws are securely tightened
and the INCRA LS Positioner is rmly held in place.
Always turn off the power and make sure that the
bit or blade is fully stationary before moving the
INCRA LS Positioner to any new setting.
Always keep both hands behind the fence when
moving the INCRA LS Positioner to a new setting.
Before making a cut, always make sure that the
carriage clamp is fully engaged and the fence is
securely locked in place.
When using the INCRA LS Positioner with other
tools, make sure that all safety guards and other
safety equipment supplied by the manufacturer of
that tool are securely in place and functional. Never
let the INCRA LS Positioner interfere with another
tool’s safety equipment.
Use appropriate safety devices. Keep hands
clear of the bit or blade. Always use a push stick,
rubber soled push block, or other safety device to
keep your hands safely away from the cutting tool.
Wear safety glasses, hearing protection and
follow all normal shop safety practices.
DO NOT alter or modify the INCRA LS Positioner in
an attempt to use it with non-INCRA accessories.
Never let the bit or blade come into contact with
any part of the INCRA LS Positioner, INCRA Shop
Stop, or INCRA Right Angle Fixture.
GETTING ACQUAINTED
Before setting up and using your new INCRA LS Positioner, take a few moments to become better acquainted with the tool by reviewing the following component descriptions and the illustration in Fig. 1.
Lead Screw Positioning Element
The LS Positioner obtains its great accuracy and
repeatability from the precision lead screw, which
positions the fence in exact increments of
(1mm metric version.)
1
/32”
Auxiliary Scale Slots
Four auxiliary scale slots are provided to allow
additional setups and cutting operations to take
place without altering the primary scale position.
Simply slide the supplied
scale into position as needed for reference.
The friction t holds the scales securely during
cutting operations. These extra slots are great
for advanced joinery using the INCRA templates.
You can even leave your most frequently used
joinery templates from the optional INCRA Master
Reference Guide & Template Library permanently
installed.
1
/32” or 1mm “oating”
Three-Position Carriage Clamp
By pushing the carriage clamp down into the
“unlocked” position, the carriage is free to glide to
the next setting. Pull the clamp up to the center
position for micro adjusting. Pull the clamp up to
the nal position and the carriage is locked solidly
in place.
Hairline Cursor and View Windows
The large hairline cursor and view windows
provide a clear visual reference of the fence
location and span the width of the carriage top
and all ve scale slots. The factory placement of
the cursor can be moved to the rear view window
location for use on smaller router tables.
LS Base
The LS Base contains the threaded segment that
engages with and functions to locate the
carriage. It also houses the three-position carriage
clamp, the hairline cursor, and view windows.
Carriage
The reinforced square tube design of the carriage
provides the ultimate in strength and support for
your fence. It supports the lead screw positioning
element and the micro adjust knob.
Stainless Steel Primary Scale
After setting up your INCRA LS Positioner and
“zeroing” to the bit or blade, position this scale to
read 0” under the hairline cursor. Use this scale
as the primary source for readout of fence to bit or
blade distance.
4 INCRA Woodworking Tools & Precision Rules
Fence Mounting Bracket
This heavy steel bracket provides a quick and
easy means to attach the Pro II Fence, the Wonder
Fence, or the TS table saw fence.
Micro Adjust Knob
With the carriage clamp in the micro adjust
position, use this knob to ne-tune the location
of your fence in
metric version.) Ball bearing engaged detents on
the knob provide an audible click for each
(1/20mm) of adjustment. The pointer and easy
to read scale give a clear readout of your fence
1
/1000” increments (1/40mm for
1
/1000”
movement. Turning the knob clockwise moves the
fence closer to the cutter. Turn it counterclockwise
and the fence moves away from the cutter. Each
full turn of the knob moves the fence
for the metric version.
1
/32” or 1mm
Micro Adjust Scale Dial
This laser engraved dial provides a clear reference
for micro adjustments. Each mark on the dial
represents
After micro adjusting, the dial can be re-zeroed to
the pointer for future adjustments.
1
/1000” (1/40mm for metric version.)
FIG. 1
SETUP - MOUNTING TO YOUR ROUTER TABLE
Note: If you are setting up a table saw-based LS,
read the Getting Acquainted and Operations section
of this manual, then follow the instructions in the
TS-LS owner’s manual.
Drill Mounting Holes
1
Unlock the carriage clamp and carefully remove
the carriage from the LS base. For maximum access
to fence system range, locate the leading edge of
the LS base the following distance from the center
of your router collet: 19¾” for the 17” (430mm)
range model or 27¾” for the 25” range model, Fig. 2.
Center the LS Base across the width of your table. If
you have a router table top that is not long enough to
handle the full range of your LS Positioner, see the
Tip on page 6 for an easy way to extend your table
dimensions.
INCRA LS Positioner Owner’s Manual 5
Note: While it is permissible to allow some of the
LS Base to overhang the table, a minimum of 4” of
the LS Base must be overlapped onto the table for
secure mounting.
FIG. 2 Locate leading edge of LS Base on your router table
Leading Edge
19¾” (17” model)
27¾” (25” model)
LS Base
Extending your router table length
Screw aluminum or steel angle to the
underside of the router table to provide
support arms for a table extension, Fig. 3.
The extension needs to be ush and parallel
to the table top. Shim into alignment as
necessary.
Once you have determined where the leading edge
of the LS Base will be positioned, mark a line on the
table at this spot. The line should be parallel to the
back edge of your router table. Measure back 1”
5
from this line and mark positions for (2)
/16” diameter
mounting holes spaced 5½” apart. Measure back
another 2” further and mark positions for (2) more
5
/16” diameter holes, Fig. 4. (If your table permits,
increase the spacing between the 2 sets of holes.)
Drill the holes.
Attach LS Base to your Router
2
Table
Open the LS Base Mounting Hardware Pack A-21.
Place the (4) ¼-20 x 2” hex bolts through the holes in
the table and loosely fasten with ¼” washers and hex
nuts. Now slide the heads of the bolts into the T-slot
located on the underside of the LS Base, Fig. 5.
Square the base to your table edge and tighten the
fasteners. Now slide the carriage back into the base
and pull the carriage clamp up to lock the carriage in
place.
FIG. 3
Existing
router
table top
Extension
wing
Wood
screws
Aluminum or steel angle
FIG. 4 Drill mounting holes
Mark where leading
edge of LS Base will
be positioned
5
Drill
/16” diameter holes
1”
2” minimum
5½”
Note: If you have an “Incra ready” router table with
T-nuts installed in the pre-drilled mounting holes, use
the (6) ¼-20 x 1¾” pan head Phillips screws with ¼”
washers to attach the LS Base as shown in Fig. 6.
FIG. 5 Aach LS Base to router table
Slide LS
Base onto
heads of hex bolts
¼-20 x 2” hex bolt
¼” flat washer
¼” hex nut
FIG. 6 Mounting for “Incra Ready” router table
PRO II FENCE INSTALLATION
The Pro II Fence, included in both the Standard
and Super System packages, provides a 28”
long reference for all of your cutting operations.
Machined to perfection, it includes a 1” x 1” opening
to handle all of your grooving, dadoing, rabbeting
and joinery applications. The fence top includes
INCRA positioning racks that work in conjunction
with the INCRA Shop Stop for perfectly repeatable
stopped cuts. The self-storing stop extender bar
permits stopped cuts beyond the length of the
fence and the front T-slot allows easy attachment of
user-made sub fences or the Super System Wonder
Fence.
¼-20 x 1¾” pan
head Phillips screws
¼” flat washer
(STANDARD & SUPER SYSTEM ONLY)
6 INCRA Woodworking Tools & Precision Rules
Attaching the Pro II Fence
Carefully slide the carriage into the LS Base and pull
the carriage clamp up into the fully locked position.
Open the Incra Pro II Fence Hardware Pack A-07.
Place a ¼” washer on each of the (2) ¼-20 x ½”
socket head screws and insert through the slotted
holes located on the steel fence mounting bracket.
Loosely thread on the ¼-20 rectangular nuts, then
slide the nuts into the T-slot located on the rear of the
Pro II Fence. Position the fence so that the carriage
is approximately centered on the fence length and
tighten the (2) mounting screws with the supplied hex
tool, Fig. 7.
Installing Pro II Extender Bar
and Stop
Place a ¼” washer on the ¼-20 x 3/8” socket head
screw and insert through one of the holes located
at either end of the Pro II Fence. Loosely thread on
the ¼-20 rectangular nut and slide the extender bar
into the cavity in the fence, capturing the rectangular
nut in the T-slot located on the extender bar. The
scale on the extender bar should be face up. Slide
the extender bar until only about 1” of the bar
remains exposed and tighten the fastener, Fig. 8.
Place a ¼” washer and a
the ¼-20 x 2” socket head screw, insert through the
extruded hole located on the extender bar stop, and
loosely thread on the ¼-20 rectangular nut. Slide
the nut into the T-slot located on the front of the
extender bar. Slide the extender bar stop until the
at side of the stop contacts the end of the Pro II
Fence. Tighten the fastener, then slide the scale to
read 0” at the end of the fence extrusion, Fig. 9.
1
/8” thick nylon washer on
Pro II Fence installation
FIG. 7 Aach Pro II Fence
Pro II
Fen ce
Steel fence
mounting bracket
¼”-20 rectangular nut
FIG. 8 Install Pro II extender bar
¼” flat washer
¼-20 x ½”
socket
head screw
¼” flat washer
Pro II Fence
Pro II
extender
bar
FIG. 9 Install extender bar stop
3
/8”
¼”-20 rectangular nut
Slide scale to
read 0” here
Pro II
extender
bar
Extender bar stop
¼”-20 rectangular nut
1
/8” nylon
washer
Pro II Fence
¼” flat
washer
¼-20 x 2”
socket head
screw
¼-20 x
socket head
screw
FIG. 10
Extender bar
inverted for storage
When not in use, the extender bar and
stop can be stored in the fence. Just
slide the extender bar out, turn it over so
that the scale is face down, and insert back
into the fence. Tighten the fastener to secure
the bar, Fig. 10.
INCRA LS Positioner Owner’s Manual 7
Adjusting the Fence Angle
After mounting the Pro II Fence, pull the carriage
clamp up to the fully locked position and check the
angle of the fence to your tabletop using a reliable
square. Any deviation from 90° can be adjusted to
perfection by placing a masking tape shim between
the mounting bracket and the fence as shown in
Fig. 11.
FIG. 11
Adjusting the
fence angle
Place shim here if
angle is greater
than 90º
Mounting an Auxiliary Fence to
your Pro II Fence
Should you have an application requiring the use
of a user-made wooden auxiliary fence, you’ll nd
FIG. 12 Mounting an auxiliary fence
the T-slot in the front face of the Pro II Fence is
5
designed to capture a ¼-20 hex nut. Just use the
dimensions in Fig. 12 to drill and counterbore the
fence, then use (2) ¼-20 Phillips pan head screws,
/16” dia. through holes with 3/4” dia. counterbore
¼-20 hex
nuts
(2) ¼” at washers, and (2) ¼-20 hex nuts to secure
the auxiliary fence to the Pro II Fence. Adjust the
length and thickness of the fence to accommodate
your application.
WONDER FENCE INSTALLATION
While you should read the Safety, Operation and
Applications sections of the included Wonder
Fence owner’s manual, it is not necessary
to read the Fence and Hi-Rise mounting
instructions in that manual. Just follow the
instructions below for proper mounting of the
Wonder Fence and Hi-Rise Fence Cap to your
LS Positioner.
LS Positioner Super System
90º
1¾”
Place shim
here if angle is
less than 90º
14”
(SUPER SYSTEM ONLY)
Attaching the Wonder Fence
to the Pro II or TS Fence
Note: In the 17” (430mm) and 25” Super System
packages, the Wonder Fence front fence halves
are shipped already installed onto the Pro II Fence;
however, you should read and become familiar
with the following installation procedure for future
adjustments or removal.
Insert the supplied hex tool through the (2) large
diameter access holes located on the front of
each Wonder Fence half and loosen the (2) socket
head screws. Do not remove the rectangular
nuts. For a better view of the fasteners, loosen the
thumbscrew and slide the black plastic view panel
located on the top of each fence half, Fig. 13.
8 INCRA Woodworking Tools & Precision Rules
FIG. 13
Use hex tool to loosen fasteners
through two larger holes
Slide the (2) rectangular nuts on each Wonder
Fence half into the T-slot located on the front face
of the Pro II, Fig. 14 or the TS Fence, Fig. 15.
Position the Wonder Fence halves so that your
router collet is centered in the opening between
the fences, then tighten the (2) socket head screws
on each fence half. Slide the view panel back in
place and tighten the thumbscrew.
FIG. 14 Aaching Wonder Fence to the Pro II Fence
Rectangular nuts
slide into T-slot
on front of Pro II
Fen ce
Wonder Fence
Pro II
Fen ce
FIG. 15 Aaching Wonder Fence to the TS-LS Fence
Attaching the Wonder Fence Hi-Rise Fence Cap
Attach the Fence Cap Braces
1
Open the Wonder Fence Hi-Rise Fence
Hardware Pack A-09. Place a ¼” washer on each
of the (2) ¼-20 x
thread one screw into each of the (2) dual pilot
rectangular nuts. Place a ¼” washer on a ¼-20 x ½”
socket head screw and insert through the hole on the
front of each fence brace. Loosely thread the screw
into the remaining hole on the dual pilot rectangular
nut, Fig. 16. Repeat for the remaining fence brace
and dual pilot nut.
3
/8 button head screws and loosely
FIG. 16
Fence cap
brace
3
¼-20 x
buon head
screw
/8”
Wonder Fence
¼-20 x
½” socket
head screw
¼” flat
washer
Dual pilot
rectangular nut
Rectangular nuts
slide into T-slot on
front of TS Fence
TS Fence
Slide the dual pilot nut on each fence brace
assembly into the T-slot located on the top of the
Pro II Fence. Use the forward T-slot located on the
5
TS Fence. Space the two braces 7
/8” apart on
the fence. Tighten all (4) fasteners, Fig. 17.
Open the Wonder Fence Brace Support Hardware
Pack A-10. Place a ¼” washer on each of the (2)
¼-20 x ½” socket head screws supplied and insert
through the slotted holes located on the support
brackets. Loosely thread on a ¼-20 rectangular
nut, then slide the nut into the T-slot located on the
rear of the Pro II Fence.
Position the support brackets directly under the
fence cap braces. Slide the support brackets up
to rmly contact the underside of the fence cap
braces, then tighten the socket head screws,
Fig. 18.
Note: Support brackets are not required for use
on the TS Fence.
FIG. 17
Dual pilot rectangular
nuts captured in T-slot
FIG. 18
Fence cap
brace
Fence cap
brace
”
5
8
/
7
¼-20 x ½” socket
head screw
Support
bracket
¼” flat
washer
¼-20 rectangular nuts captured in
T-slot in rear of Pro II Fence
INCRA LS Positioner Owner’s Manual 9
Attach the Cap Extender
2
Place a ¼” washer on each of the (2) #10-32
x ½” Phillips pan head screws and insert through
the slotted holes located in the fence cap extender.
Loosely thread a #10-32 hex nut onto each fastener,
then slide the hex nuts into the T-slot located on
the top of each fence cap brace. Position the cap
extender so you can later gain access to the socket
head fasteners on each fence cap brace through
the slotted holes. Pull the cap extender forward
until it rmly contacts the back of each brace and
tighten the (2) Phillips head screws. See Fig. 19 and
Detail 19A.
FIG. 19 Aach cap extender
First: Insert
fasteners and
slide #10-32
hex nuts into
T-slot on top
of braces
Brace
#10-32 x ½”
Phillips screw with
¼” flat washer
Third: Slide
cap extender
forward to
contact brace,
then tighten
screws
Second: Position cap
extenders to allow future
access to socket head
screws through sloed
hole
Fence cap extender
DETAIL 19A
3
Attach and Align Fence Cap
Place the 24” long fence cap on top of the cap
5
extender and attach using the (2) ¼-20 x
/8” socket
head cap screws with ¼” washers and lock nuts.
Use a straightedge to align the leading edge of the
fence cap with the front face of the Wonder Fence
and tighten the two cap mounting screws, Fig. 20.
To remove the fence cap and braces, just remove the
two fasteners that secure the braces to the top of the
Pro II or TS Fence and lift the entire unit off, Fig. 21.
Place the fasteners back into the threaded holes in
the dual pilot rectangular nuts for storage.
SHOP STOP
FIG. 20 Aach and align fence cap
¼-20 x 5/8” socket head screws
First: Aach
fence cap to
cap extender
FIG. 21
To remove fence
cap and braces,
unscrew the
(2) ¼-20 x
socket head
screws
5
/8”
Fence cap
Second:
Use
straight-edge to
align fence cap, then
tighten screws
When used in conjunction with your new Pro II
Shop Stop
Fence or Wonder Fence, the INCRA Shop Stop
provides the same precise positioning capabilities
that your LS Positioner offers. The patented
incremental positioning of INCRA’s saw-toothed
racks found on the Shop Stop and your INCRA
fence allow perfectly repeatable stop locations
1
at any multiple of
/32” (1mm for metric version.)
The two-piece body can be micro adjusted to any
position between steps and can be congured to
clamp to your fence even when using wooden sub
fences up to ¾” thick. Follow the instructions on
the next page to set up and use the Shop Stop.
10 INCRA Woodworking Tools & Precision Rules
Shop Stop Assembly
After removing the Shop Stop from the packaging,
loosen the two white nylon thumbscrews and clamp
the stop to the outfeed end of your INCRA fence.
Now loosen the #10-32 x 3½” Phillips head screw
and slide the red vertical stop arm onto the hex nut,
Fig. 22. Make sure that the indexing lip on the arm
wraps around the front of the stop body and that
the arm is at against the end of the body, Fig. 23.
Tighten the fastener to secure the arm a short
distance above your
router table to provide
clearance for sawdust.
The fastener and stop
arm can be reversed
for use at either end of
your fence.
FIG. 23 Top view of vertical stop arm
Indexing
lip
FIG. 22 Shop Stop assembly
Vertical stop arm
Shop Stop
#10-32 x 3½” Phillips head screw
#10-32
hex nut
slides into
T-slot on
vertical
stop arm
#10 flat washer
Micro Adjusting
Fine-tuning the position of your Shop Stop relative
to a cutter is easy and accurate. Just loosen the
two black thumbscrews on top of the Shop Stop
1
body about
/8 turn, then turn the machine screw
located at the end of the stop, Fig. 24. Each full
turn of the screw moves the stop surface exactly
1
/32” (approx. 1mm.) When turning the screw
counterclockwise, push the stop body toward the
screw. Always tighten the two black thumbscrews
after micro adjusting.
Expanded Clamping Mode
The two-piece design of the INCRA Shop Stop
permits use of a ¾” thick wooden auxiliary fence
without interfering with the stop’s ability to clamp
to your INCRA Fence. To change the stop to
expanded clamping mode, loosen the two black
thumbscrews and slide the stop body (red) off of
the stop cap (gold). Now slide the (2) rectangular
nuts on the stop body into the alternate T-slot on
the cap, Fig. 25. Tighten the two clamping knobs.
FIG. 24 Micro adjusting
First: Loosen both black thumbscrews.
Leave both white thumbscrews fully
tightened if already installed on fence
Second: Turn
micro adjust
screw to move
stop body
position
Third: Tighten
both black
thumbscrews
Stop body
FIG. 25 Converting from standard to expanded clamping mode
Standard Mode Expanded Mode
Stop body
Small gap
INCRA LS Positioner Owner’s Manual 11
Loosen black thumbscrews
and slide stop body off of cap
Stop cap
Large gap
Reassemble stop body to
stop cap as shown
Zeroing the Shop Stop
In order for your INCRA Shop Stop to
accurately locate your work piece for a
cut, you must rst “zero” your Shop Stop
to the cutter and position the sliding scale
on your fence. For most applications at
the router table you will be using your
Shop Stop on the outfeed fence to limit
the length of a cut relative to the front end
of a board. Follow the steps detailed in
Fig. 26 to zero to your cutter.
Once the Shop Stop is zeroed to the
router bit as shown in Fig. 26, you now
have the choice of setting the sliding
scale on your INCRA Fence to one of
three initial positions. See Fig. 27 and
Detail 27A.
FIG. 26
Fourth: Slide scale
to read directly
under end of stop
cap. Use one of the
initial scale seings
from Fig. 27
Third: Loosen black thumbscrews 1/8 turn
and micro adjust until stop arm touches
end of board. Retighten thumbscrews.
Second: Clamp Shop Stop
to fence with the vertical
stop arm as close as
possible to the board
First: Slide square cut
board to contact “high
spot” on the router bit
DETAIL 27A
C
B
A
FIG. 27
OPERATION
Moving to a New Scale Setting
Moving the fence to any new scale setting is
just as easy as moving any other fence you’ve
used before. Push the carriage clamp down to
unlock the carriage, then slide the fence as you
sight through the hairline cursor. When you see
your measurement under the hairline cursor,
pull the clamp up to the locked position, Fig. 28.
Remember that the LS Positioner will only clamp
1
every
don’t try to clamp in between scale marks. It just
won’t work!
/32” or 1mm with the metric version, so
Although the clamping pressure has
been factory adjusted, you may wish
to ne-tune the pressure to suit your
individual feel. If so, use the thin plastic
shims provided and follow the instructions
beginning on page 14.
Slide scale on fence to one of
three initial positions
A: Slide scale to 0” for
a direct readout of
dimension “A”
(Total length of cut)
B: Slide scale to “minus
½ of bit diameter”
for direct readout of
C
B
A
dimension “B”
C: Slide scale to “minus
bit diameter” for direct
readout of dimension “C”
CAUTION: For your safety, keep your hands
behind the fence when moving to any new
scale setting.
FIG. 28 Moving to any new scale seing
First: Unlock carriage clamp
Third:
Return
clamp to
upright
Second: Slide fence as
you view scale through
hairline cursor
“locked”
position
12 INCRA Woodworking Tools & Precision Rules
Micro Adjusting your Fence
Position
The micro adjust feature of your LS Positioner allows for
precise positioning of the fence to any location between
1
/32” or 1mm incremental spacing of the lead screw.
the
You’ll nd this feature extremely handy the next time
you need to widen a mortise by a hair for a great tting
mortise and tenon joint. Use the micro adjuster for a
awless t when cutting grooves to accept inlay strips or
to loosen up a tight tting tongue and groove joint. You’ll
nd it especially useful for setup operations like “zeroing”
to your cutter, or “centering” for joinery. Here’s a step-bystep look at operating your LS Positioner’s micro adjuster.
See Fig. 29 as you follow the steps.
Set Carriage Clamp to Micro Adjust
1
Position
Lower the carriage clamp to completely unclamp the
carriage, then raise the carriage clamp to the center
position. This center position for the carriage clamp
softens the clamping pressure on the carriage to permit movement during micro adjusting.
Micro Adjust the Fence Position
2
Rotate the red micro adjust knob located at the
forward end of the carriage. Turn the knob clockwise
to move the fence toward the cutter, or counterclockwise to move the fence away from the cutter. Ball
bearing engaged detents on the knob provide an
audible click for each
version) of fence movement.
Lock the Carriage Clamp
3
Pull the carriage clamp up to lock the carriage
in place. Gauging the distance moved when micro
adjusting is easy. A full turn of the knob equals
(1mm for metric version.) For smaller adjustments,
the black dial is marked in
After micro adjusting, you can re-zero the dial to the
pointer by rotating the dial (not the red knob) with
your ngers. See Fig. 30.
1
/1000” (1/20mm for metric
1
/32”
1
/1000” (1/40mm) increments.
FIG. 29
Third: Turn
micro adjust
knob to finetune fence
position
Fourth: Pull
carriage clamp
up to “locked”
position
FIG. 30
Micro adjusting
Re-zeroing the micro adjust dial
After micro adjusting, rotate the
dial (not the knob) to align the
zero with the pointer
For a truly precise “zeroed” setup, follow
the instructions above, then move the
fence to a scale reading of ¼” and make a
test cut on a piece of scrap stock. (Make sure
the scrap stock has a straight and square fence
bearing edge.) Use a pair of machinist calipers to
measure the distance between the groove and the
edge of the board. If it does not measure exactly
.250”, just use the micro adjuster to accurately ne-
tune the remaining distance.
Second: Pull carriage clamp up to
center “micro adjust” position
First: Push
carriage
clamp down
to “unlock”
Micro adjust knob
Micro adjust dial
Pointer
0
Zeroing the Fence to Your Cutter
In order to ensure accurate cutting results from any
fence for general purpose routing, the fence must rst
be “zeroed” to the cutter, Fig. 31. To zero your fence,
unlock the carriage clamp and slide the fence up to
the edge of the cutter. Sight down the length of the
fence to check for a gap between the fence and the
cutter. Fine-tune any remaining distance by micro
FIG. 31
First: “Unlock”
carriage clamp and
slide fence up to
cuer
Third: Lock carriage
clamp
Zeroing the fence to your cuer
Second: Raise carriage
clamp to “micro adjust”
position and rotate
micro adjust knob until
gap between fence and
cuer disappears
adjusting the fence position. When the gap of light
disappears, the cutter will be “zero” distance from
the fence. Check to make sure that the router bit is
safely centered in the opening in the fence. Return the
carriage clamp to the locked position, then slide the
measuring scale to read 0” under the hairline cursor.
INCRA LS Positioner Owner’s Manual 13
Fourth: Slide
stainless steel
primary scale to
read 0” under the
hairline cursor
APPLICATIONS
General Purpose Fence
The essence of your INCRA LS Positioner is its
ability to accurately position your board for a
cutting operation. In a nutshell, it is a precision
fence system. Even when used as a joint maker,
you are simply applying a method of work to a
very accurate fence system to produce the many
possible joints. Above all else, the LS Positioner
gives you the ability to make a cut exactly where
you want it, Fig. 32.
Using your LS Positioner as a general-purpose
fence is just as easy as using any other fence in
your shop. In fact, it shares in common four things
that all fences have: the straight edge or fence that
your board will be pushed along as you make a cut,
a scale, a hairline cursor, and a clamp. You will use
your LS Positioner as you would any fence. That
is, rst you’ll unclamp the carriage, then you’ll look
through the hairline cursor as you move the fence.
When you see your measurement come under the
hairline, you’ll clamp the fence in place.
Of course, this is where the comparison ends
because unlike other fences, when you clamp the
LS Positioner in place, it is exactly where you want
it to be. Just get the mark on the scale close to
the hairline cursor and the Automatic Positioning
Control™ of the patented Lead Screw mechanism
moves the fence to the exact location as you pull
the carriage clamp up to lock the fence in place. It
really is that easy. You’re sure to nd many cutting
situations in your shop where the precision of the
LS Positioner will benet you and your work.
FIG. 32 Incra LS Positioner
Joint Making
Joint making represents one of the most exciting
applications for your INCRA LS Positioner. Just
by applying a little technique to the considerable
precision of the LS Positioner, you’ll be able to add
joinery for box and drawer making to your list of
shop skills. The INCRA Master Reference Guide &
Template Library
included with the
Standard and Super
System Packages is
a complete source
book for joinery,
including step-bystep instructions for
box joints, half blind
dovetails, through
dovetails, the INCRA
double dovetail and
the double-double
box joint, Fig. 33.
FIG. 33 Master Reference Guide
ADJUSTMENTS
All of the components and features of your new
INCRA LS Positioner have been factory set
and should require no further adjustment. If,
however you wish to adjust or recalibrate these
components, the following information is provided
to assist in performing the adjustments.
Adjusting the Clamping Pressure
The LS Positioner carriage clamp assembly was
designed to make it easy for the operator to adjust
14 INCRA Woodworking Tools & Precision Rules
the clamping pressure using the carriage clamp pad
shims supplied in Hardware Pack A-22. Here’s how:
Unlock the carriage clamp and press the
black UHMW bearing pad forward with your nger as
you use a
passes through it. Slide the black UHMW bearing pad
up and out of the LS Base.
Note: Do not pull the carriage clamp up with the
black UHMW bearing pad removed.
1
/8” hex key to remove the set screw that
1
/8” thick
You’ll notice one or more thin plastic shims in the
cavity behind the metal spring engager, Fig. 34.
To change the clamping pressure, simply add or
remove shims. If you want to increase clamping
pressure, add one of the supplied shims. If you want
to decrease clamping pressure, remove one of the
thin shims. The matte nish shim is .005”, the clear
shim is .010” and the white shim is .020”. When
making adjustments, add or remove only .005”
at a time, and keep the thinner shims between
the metal spring engager and the white shim,
Fig. 35. Press the metal spring engager forward
with your nger and slide the black UHMW bearing
pad between the shims and the carriage clamp.
Note: You will notice a piece of thick tape adhered
to one face of the black UHMW clamping pad.
When reinstalling the clamping pad, make sure
the taped surface is facing away from the carriage
clamp, Fig. 34.
Press the UHMW bearing pad forward and reinstall
the set screw.
FIG. 34
FIG. 35
Clamping pressure adjustment
Taped surface this face
Thin plastic shim
Clamping pressure adjustment
Metal spring engager
Black UHMW bearing pad
Set screw
Metal spring
engager
Thin plastic shims
Place adjustment shims
between white shim and
metal spring engager
CAUTION: Whenever making clamping
pressure adjustments, always make sure
that adequate pressure remains to hold the
carriage rigidly in place when clamped in
the fully extended position.
Realigning the Fence Racks
To check or adjust the alignment between the
INCRA positioning racks attached to the back of
your Pro II Fence, begin by loosening the fasteners
securing the racks to the fence. Align the rst rack
ush with the end of your fence and tighten the
fasteners. Now, clamp the INCRA Shop Stop to
your fence so that it bridges the gap between the
ends of racks #1 and #2 as shown in Fig. 36 and
tighten the mounting screws for rack #2. Next,
move the Shop Stop to bridge the gap between
racks #2 and #3 and tighten the mounting screws
for rack #3. Finally, bridge the gap between
racks #3 and #4 and tighten the rack #4 mounting
screws. This process aligns the racks so that the
Shop Stop will operate accurately along the entire
length of the fence. The racks on the Wonder
Fence can be aligned in the same way.
FIG. 36
Second: Bridge the
gap between racks
#1 and #2 with
the Shop Stop
Rack #1
Realigning fence racks
First: Tighten this rack’s
mounting screws
Rack #2
White shim
Fourth: Repeat
the steps to
tighten racks #3
and #4
Rack #4
Rack #3
Third: Tighten the
mounting screws
for rack #2
AUTO CENTERING SCALE (ImperIal model only
Before installing any of the INCRA joinery templates
in preparation for cutting a dovetail or box joint you
must first position your fence so that the router bit
is aligned with the center of your board’s width.
This can be done using the manual “centering”
method described on pages 3-4 of the INCRA Master
method does require a trial cut on a scrap of wood
but it will work on any width of stock. However, if
you are working with a board width that is some
1
multiple of
⁄16” you’ll find the INCRA Auto Centering
Scale provides a quick and easy way to find the
center that requires no trial cuts!
)
Reference Guide & Template Library. The manual
INCRA LS Positioner Owner’s Manual 15
Positioning the Auto Centering
Scale (Imperial Model Only)
Install the router bit recommended for the
1
selected joint pattern and set the depth of cut
as described on pages 2-3 of the INCRA Master
Reference Guide & Template Library.
Zero the fence to your cutter with the router bit
2
behind the fence rather than in front. To do this,
slide your fence to cover the router bit (the bit should
be inside the notch just slightly behind the front face
of the fence) and place your jig in the micro adjust
mode. Place a straight board against the fence and
micro adjust the fence position until you see the
router bit just barely touching the board, Fig 37. Pull
the carriage clamp up to lock your jig.
Slide the INCRA Auto Centering Scale into one
3
of the scale slots. You’ll notice on the right end
of the scale the words “Router Bit Diameter” and an
arrow pointing to the following numbers:
1
⁄2, 5⁄8, 3⁄4, 7⁄8, 1. Slide the scale to position the
number that matches your router bit diameter directly
under the hairline cursor. Fig. 38
1⁄8, 1⁄4, 3⁄8,
Using the Auto Centering Scale
Unlock and slide the fence until you see the
dimension on the scale that matches your selected
stock width directly under the hairline cursor. Lock
the fence in place. Example: If you are centering on
a 6” wide board, slide your fence until you see the 6”
mark on the Auto Centering Scale under the cursor
and lock the jig in place. Now slide your joinery
template into one of the scale slots, position the
suggested center cut mark directly under the hairline
cursor and you are ready to cut the joint.
FIG. 37 Zero fence to cuer
Micro adjust fence until
router bit just touches
piece of wood
Board pressed
against fence
FIG. 38
Position Auto Centering Scale under hairline cursor
Slide mark that
matches your bit
diameter under cursor
Note: Your Auto Centering Scale has marks
on the top edge that are closer together
than the marks on the bottom edge. When
reading the scale, each mark along the top
represents
along the bottom edge represents
board width.
1⁄16” of board width. Each mark
Fen ce
1⁄8” of
WARRANTY
Taylor Design Group, Inc. warrants this product for one year from date of purchase. We will repair any defects
due to faulty material or workmanship, or at our option, replace the product free of charge. Please return the
failing component only, postage prepaid, along with a description of the problem to the address below. This
warranty does not apply to parts which have been subjected to improper use, alteration, or abuse.
Made in America by:
Taylor Design Group, Inc.
Printed in the U.S.A. © 2010 Taylor Design Group, Inc. INCRA is a registered trademark of Taylor Design Group, Inc.
16 INCRA Woodworking Tools & Precision Rules
P.O. Box 810262
Dallas, Texas 75381
Tel: (972) 242-9975
Fax: (972) 243-4277
Web Site: www.incra.com
02/05
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