22
RTJ400 User Guide
Introduction
Dedicated Customer Support
1-800-663-8932
A
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!
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
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.
Overhead view of old and new handles.
Contents
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
NEW
OLD
B
