Outstanding Dovetail Jig Design.

Refined for over 30 years, the Leigh D4R Pro Dovetail Jig makes the
process of creating perfect dovetail joinery exceptionally easy.


Play Video
Features video — Leigh D4R Pro Dovetail Jig
This video shows an earlier model D4R,
however, the information is still relevant.

Variably Spaced Through & Half-Blind Dovetails


The benefits of variably spaced dovetails are not only their classic hand-cut look, but also the flexibility they provide. It all begins with the guide finger assembly, the heart of the D4R Pro Dovetail jig. With unlimited pin and tail spacing, the jig easily fits your project, not your project having to fit the jig, and the "split finger" design of the assembly enables infinite spacing and sizing of pins and tails. The possibilities are simply endless.

Single Pass Half-Blind Dovetails


If you prefer the simplicity of equally spaced dovetails, with minimal setup you can rout both boards at the same time. Great for multi-drawer projects or for replicating period pieces.

Box Joints (Finger Joints)


Box joints (finger joints) are known for their striking symmetry and strength. Two joint sizes, 3/8" and 3/4", can be made with the D4R Pro finger assembly.

Join Boards of Different Thickness


The pin and tail boards do not have to be the same thickness. For example, drawer fronts are often thicker than the drawer sides.

Joint Fit Adjustment

Perfectly fitting joints are easy on the D4R Pro with a simple adjustment.

Through Dovetails: Move the finger assembly toward you, or away from you, for a tighter or looser fit.

Half-Blind Dovetails: Adjust the depth of cut by lowering or by raising the bit in the router, for a tighter or looser fit.

Box / finger joints: Rotate the unique patented elliptical e7 guide bushing fitted to the router base, either clockwise or counterclockwise, for a tighter or looser fit.

Strength and Portability


The one-piece CNC machined aluminum jig body of the D4R Pro is extremely strong, yet light for portability. The cast metal end housings are used to secure the jig to the mounting board or workbench. The weight and size of the jig, along with compact accessories like the VRS Vacuum & Router Support and joinery templates, make it easy to store when not in use.

Clamping and Mounting

Boards are held securely against the machined non marring, textured clamping surface by tough cam-action clamps, easily clamped with one hand. Clamp bars are made from aircraft quality aluminum. Rear and front side stops are machined into the jig for accurate board positioning. The rear side stops are undercut for rabbeted half-blind drawer fronts.

Leigh Brand Router Bits

A Leigh brand 1/2" 8° dovetail bit, 1/2" 14° dovetail bit and 5/16" straight bit are included with the D4R Pro. Leigh Brand carbide-tipped router bits are among the best you can buy. They are made with high quality C2 and C3 micro grain carbide for long bit life. Each bit is honed to a fine edge with 600 grit diamond wheels for smooth, efficient routing. Shanks are 1-3/4" long to handle the thickness of the finger assembly or accessory template. Leigh router bits are manufactured to ISO 9002 standards.

Why an 8mm shank?
Leigh jigs use 8mm shank bits because they have 60% more mass than traditional 1/4" bits, resulting in superior strength and stiffness. The added stiffness increases the stability of the bit, allowing smoother cuts, faster feed rates and safer operation.

A 1/2" to 8mm collet reducer, shown above left, is included with the D4R Pro Dovetail Jig.

Technical Specifications
Through Dovetails
A Tail Board Thickness 1/8" [3mm] 1" [25mm]*
B Pin Board Thickness 1/8" [3mm] 1-1/4" [32mm]
C Board Width 1" [25mm] 24" [610mm]
D Pin Centers 1" [25mm]  
Half-Blind Dovetails
A Tail Board Thickness 1/4" [6mm] 1-1/2" [40mm]
B Pin Board Thickness 7/16" [11mm] 1-1/2" [40mm]
C Board Width 1" [25mm] 24" [610mm]
D Pin Centers 1" [25mm]  
Single Pass Half-Blind Dovetails
A Tail Board Thickness 7/16" [11mm] 1-1/2" [40mm]
B Pin Board Thickness 5/16" [8mm] 1-1/2" [40mm]
C Board Width 2-3/16" [55mm] 13" [330mm]
D Pin Centers 1-3/32" [27mm] 1-3/32" [27mm]
Sliding Dovetails
A Tail Board Thickness 1/4" [6mm] 1-1/2" [40mm]
B Socket Board Thickness 9/32" [7mm] 1-1/2" [40mm]
C Board Width 2-3/16" [55mm] 24" [610mm]
Box Joints (Finger Joints)
A Pin Board Thickness 1/8" [3mm] 1" [25mm]
B Socket Board Thickness 1/8" [3mm] 1" [25mm]
C Board Width 1-1/8" [29mm] 16-17/32" [420mm]
D Pin Centers 1-3/32" [27mm]  
Length: 33" [840mm]
Height: 9" [230mm]
Depth: 11" [279mm]
Weight: 23 lbs. [10.5 kg]
Package (carton) size: 36" x 8" x 8"
[914mm x 203mm x 203mm]
Variably Spaced Through Dovetails
Variably Spaced Half-Blind Dovetails
Single Pass (fixed spaced) Half-Blind Dovetails
Sliding Dovetails
Rabbeted Half-Blind Dovetails
Finger (Box) Joints, 3/8" and 3/4"
Inlaid Dovetails
End-on-End Dovetails
Asymmetrical Joints (Through and Half-Blind)
Simple Angle Joints
Obtuse Angle Joints
Acute Angled Joints
Compound Angled Joints
Needle Pins
Shelf Holes and Notches

With Optional Templates:
Finger (Box) Joints, 11 sizes
Isoloc Joints, 6 patterns
Multiple Mortise & Tenon Joints
D4R Pro Jig includes:
Jig Base, Support Brackets and Knobs
Jig Mounting Hardware, inc. Leigh Wrench/Gauge
Guide Finger Assembly, Square Drive Screwdriver
Scale assemblies, 5/64" Hex Key
Cam-Action Speed Clamps and clamping bars
Template Guide Bushing (e7-Bush), inc. pin wrench
Router Bits: 1/2", 8° and 14° Dovetail, 5/16" Straight
Collet Reducer for router, 1/2" to 8mm
Bridge Piece Material (for Half-Blind Dovetails)
Nylon Stop Rod (for Single Pass Half-Blind Dovetails)
Sliding Dovetail Fence (for Sliding Dovetails)
Spacer (for Box joints / Finger joints)
Spacer (for Single Pass Dovetails)
Fully Illustrated User Guide (English only)
DVD Instructional Video (English only)
Warranty/Registration Card
Vacuum & Router Support, VRS
Finger (Box) Joint Template, F3
Isoloc Joint Templates, I1A, I1B, I1C
Multiple Mortise & Tenon Attachment, M2
Guide Bushings and Adaptors
Router Bits for Increased Versatility
Through Dovetail Bits, 6 additional
Through Dovetail Straight Bits, 2 additional
Half-Blind Dovetail Bits, 3 additional
Guide Bushings, 2 additional