Easy, Precise Box Joints

Make boxes, drawers, step stools and more


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Overview video — Leigh B975 Box Joint & Beehive Jig

1/2" and 3/4" Box Joints

With the B975 you can rout two sizes of box joints on boards up to 13/16" thick. With a width capacity of 2" to 17-13/16", it’s ideal for a variety of projects, large and small.

 
Drawer with 3/4" joints
Raised 3/4" joints
Beehive supers with 1/2" and 3/4" joints

Wider Boards

A step-over cam and a simple procedure makes it possible to rout wider boards for larger projects like step stools and tool boxes.

 

Router Table Use

The B975 design allows the template to be used upside down on the router table, for boards up to 9-11/16" wide.

Precision Injection Molded Template

The B975 Jig Template is made of glass-reinforced nylon, for a full lifetime of use.

 

User Made Beam

The template and side stops attach to a simple user made beam of MDF or common 2x4.

 

Adustable Side Stop

The unique adjustable side stop has two functions: The socket board is positioned against the Socket Board Stop A, and the Pin Board Stop B is flipped to the right, to provide the correct offset for the pin board.

 

Leigh Brand Router Bit

A Leigh brand straight bit with a 1/2" cutting diameter and 1/2” shank, No.160, is included with the B975. This carbide-tipped router bit is among the best you can buy, made with C2 or C3 micro-grain carbide. Each bit is honed with 600 grit diamond wheels for smooth, efficient routing. The shank is 1-3/4" long to handle the thickness of the template.

Joint Fit Adjustment

Perfect joinery is all about the fit. The patented elliptical eBush makes joint fit easy.

eBush Design
The barrel of the e10 is elliptical A, unlike plain circular guide bushings B. When rotated, the effective diameter of the barrel changes, allowing fit adjustments as small as .001"[0.025mm].

eBush Adjustment
All routing starts with the e10 in the no.5 position B. Turning the e10 toward the "10" position A results in a tighter fit. Turning it toward the "0" position C results in a looser fit.

Clamping and Mounting

Pin and socket boards are mounted in a vice or portable workbench. Quick grip clamps are used to clamp the jig to the board. Clamps not included.

 
Technical Specifications
CAPACITIES
 
Box Joints
  MIN MAX
A Pin Board Thickness 1/8" [3mm] 13/16" [20.64mm]
B Socket Board Thickness 1/8" [3mm] 13/16" [20.64mm]
C Board Width 1-1/2" 17-13/16" [432mm]
D Pin Centers
1/2" comb
3/4" comb
FIXED WIDTH
1" [26mm]
1-1/2" [39mm]
 
 
JIG SIZE AND WEIGHT
Length: 12.6" [320mm]

Height: 0.49" [12.5mm]

Depth: 3.76" [95.5mm]

Weight: 0.94 lb [430 grams]

Package (Carton) size:
1.7 lbs. (.77 kg) 13-1/2" x 6-1/2" x 2-1/2" (342 x 165 x 64 mm)

 
STANDARD JOINERY
Box joints in 1/2" and 3/4" joint sizes
 

 
IN THE BOX
Jig Template, glass-reinforced nylon

Side Stops, adjustable for precise pin and socket board positioning

Step-over Cams, 1/2" and 3/4", accurate indexing when routing wider boards

Straight Bit 160, 1/2"x1-1/4", 1/2" shank

Guide Bushing, e10 Elliptical eBush for precise joint fit adjustment

Pin Wrench, for eBush adjustment

10 Screws, No.8 Phillips Pan Head, for beam assembly

User Guide, fully Illustrated

DVD, instructional