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RTJ400 User Guide
Introduction
Your New Leigh RTJ400 Router Table Dovetail Jig for
Through Dovetails, Half-Blind Dovetails and Box Joints
The RTJ400 was designed for the ever increasing use of router
tables in shops everywhere. The RTJ400 can produce sizes and
types of joints not possible with typical template jigs, including
through dovetails, half-blind dovetails and box joints (finger
joints), and thanks to the patented Leigh eBush, perfect fitting
joints are guaranteed every time.
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, Chapter 15.
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!
Contents
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"[12mm x 50mm].
Do not be concerned that the inch/millimeter equivalents are
not mathematically “correct”. Just use the dimensions that
apply to your guides and bits.
The RTJ400 is covered by the following patent: U.S. Patent No. 8,534,329
Patents for all Leigh elliptical guide bushings: U.S. 8,256,475 UK GB2443974
Dedicated Customer Support
1-800-663-8932
Introduction 2
Jig Features 3
Bit Specifications 4
Accessory Kit for the RTJ400 5
Router Table Requirements 6
Chapter 1 Assembling the RTJ400 7
Chapter 2 Glossary of Symbols 11
Chapter 3 Using your Jig Safely 13
Chapter 4 Basic Jig Functions 15
Chapter 5 Wood Preparation 19
Chapter 6 The Leigh eBush 21
Chapter 7 Through Dovetails 23
Chapter 8 Half Pitch Through Dovetails 29
Chapter 9 Half-Blind Dovetails 35
Rabbeted Half-Blind Dovetails 40
Chapter 10 3/8" Box (Finger) Joints 43
3/8" Half-Blind Box Joints 48
Chapter 11 3/4" Box (Finger) Joints 53
Chapter 12 3/16" Box (Finger) Joints 59
Chapter 13 3/32" Box (Finger) Joints 65
Chapter 14 Jig Parts 71
Chapter 15 Customer Support 73
Chapter 16 Quick Reference 74
Board Width Selection 74
IMPORTANT Jig Design Update
The drawings in this user guide show an earlier version of the jig
handles A. The handles now have two protrusions to protect the
pin B. The functionality remains the same.
A
Overhead view of old and new handles.
B
NEWOLD
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Introduction
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RTJ400 User Guide
3
RTJ400 Jig Features and Parts
See complete list of jig parts in Chapter 14.
A
Jig Template, CNC machined, with holes and slots to position the frame,
If any of these parts are missing from your jig, please notify your
supplier or Leigh immediately. See Chapter 15, Customer Support.
and precision guides for routing tails, pins & sockets
B
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J Instruction Strips, 5, for quick reference; inserted in jig top
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Jig Frame, CNC machined, with pins that fit into template holes & slots
Frame Latches, 2, to secure jig frame to jig template
C
Hex Key, 1/8" Ball End
Cam-Action Speed-Clamps, 4, for mounting workpieces to jig
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Blockers, 10, inserted in template guide openings to prevent routing
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Stop Rod, inserted in template holes to limit cutting depth
Side stops, 2, for mounting workpieces; adjustable for all joint types
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Bit Depth Gauge, for setting cutting depth on half-blind dovetails
Dovetail Bit 120-500, 1/2" x 1/2" x 14º
Dovetail Bit 80-500, 1/2" x 13/16" x 8°
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Straight Bit 143-500, 3/8" x 1-1/4"
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Straight Bit 160, 1/2" x 1-1/4"
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Guide Bushing, e10 Elliptical eBush, for perfect joint fit
Pin Wrench, to adjust e10 eBush
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User Guide, Fully Illustrated. Note: PDF of User Guide included on DVD
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DVD Video, Instructional
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You will need:
• A router table that accepts standard
size (1-3/8"OD) guide bushings
Note:
See page 6 for instructions on
fitting the Leigh eBush to your router
table.
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