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SKU: 100-055  |  MPN: RTJ400 & ACRTJ

Leigh RTJ400 Router Table Dovetail Jig and 11-Pc. Accessory Kit Package

$619.90 $639.80

Leigh RTJ400 Router Table Dovetail Jig – Precision Joinery for Table-Mounted Routers

Ideal for woodworkers using table-mounted routers, the Leigh RTJ400 Dovetail Jig delivers exceptional precision, speed, and ease of use. Unlike traditional handheld dovetail jigs, the RTJ400 glides effortlessly across the top of your router table, offering a stable, upright working position and eliminating the struggle of balancing your router on a narrow jig. 

Designed for high-performance joinery, the RTJ400 makes it simple to cut through dovetails, half-blind dovetails, and box joints with unmatched accuracy. Its CNC-machined, aircraft-grade aluminum template ensures long-lasting durability and consistent results. With the patented Leigh e10 elliptical guide bushing, you get flawless, repeatable joint fit every time.

Key Features:

  • Versatile Joinery Options
    Cut a wide range of joint types and sizes:
    • 5 sizes of through dovetails
    • 4 sizes of half-pitch through dovetails
    • 3 sizes of half-blind dovetails (single pass)
    • 4 sizes of box joints (finger joints)
  • Additional Joint Capabilities
    Rout angled dovetails and end-to-end dovetail splices—both straight and angled—for advanced woodworking applications. 
  • Simple, Accurate Operation
    Center your workpiece on the template and smoothly guide the jig across your router table for perfect results—no handheld routing required.
  • All-in-One Template
    One precision template handles all three joint types, minimizing setup and maximizing efficiency.
  • Complete with Easy-to-Follow Instructions
    Includes a 76-page illustrated guide and quick-reference instruction strips to help users of all skill levels achieve professional-grade joinery.
  • Compatibility Note
    Requires a 1-3/8'' Porter-Cable style insert ring to fit the Leigh e10 guide bushing to your router table or router lift.

Whether you're building drawers, boxes, or fine furniture, the Leigh RTJ400 is the ultimate dovetail and box joint jig for router table users. Its intuitive design, high-precision components, and wide range of joinery options make it a must-have for any serious woodworker or professional shop.

Perfect dovetails and box joints—made simple and repeatable.

  • What’s in the Box:

    • (1) Leigh 16" RTJ400 Dovetail Jig
    • (1) e10 Elliptical Guide Bushing
    • (1) Nylon Stop Rod (1) Hex Key
    • (10) Joint Blockers
    • (1) Depth Gauge
    • (2) Dovetail Router Bits (1/2" x 13/16" x 8° and 1/2" x 14°)
    • (2) Straight Bits (1/2" x 1-1/4" and 3/8" x 1-1/4")
    • (4) Cam-Action Speed Clamps
    • (1) Adjustable Side Stop
    • (1) 76-Page Illustrated User Manual
    • (1) Set of Quick-Reference Instructions
  • Technical Specifications:

    Full-Pitch Through Dovetails:

    • 5 pin sizes: 1/4", 5/16", 3/8", 7/16", 1/2"
    • Tails: up to 1" (25mm) thick
    • Pins: up to 13/16" (21mm) thick
    • Spacing: approx. 1-1/2" (80mm)

    Half-Pitch Through Dovetails:

    • 4 pin sizes: 1/4", 5/16", 3/8", 7/16"
    • Tails: up to 1" (25mm) thick
    • Pins: up to 5/8" (16mm) thick
    • Spacing: approx. 3/4" (40mm)

    Half-Blind Dovetails:

    • Sizes: 3/8", 1/2", 19/32"
    • Max joint thickness: 1" (25mm)
    • Spacing: approx. 3/4" (40mm)
    • Routed in a single pass

    Box Joints/Finger Joints:

    • Sizes: 3/4", 3/8", 3/16", 3/32"

Frequently Asked Questions

What types of joints can the Leigh RTJ400 router table jig cut?

The RTJ400 handles a broad range of fine joinery:

  • Through dovetails (5 pin sizes)
  • Half-pitch through dovetails (4 pin sizes)
  • Half-blind dovetails, single-pass (3 sizes)
  • Box joints (4 sizes), aka finger joints
  • Plus angled dovetails and end-to-end dovetail splices, both straight and angled—ideal for advanced woodworking projects.

    All these variations are possible using one single, CNC-machined, aircraft-grade aluminum template for precision and durability.

What does the “11-Pc Accessory Kit Package” (ACRTJ ) include?

The package includes everything you need to get started:

  • Leigh 16" RTJ400 Dovetail Jig
  • Leigh e10 Elliptical Guide Bushing
  • Nylon Stop Rod, Hex Key, Depth Gauge
  • 10 Joint Blockers
  • Two dovetail router bits (½" × 13/16" × 8°, and ½" × 14°)
  • Two straight router bits (½" × 1 ¼" and ⅜" × 1 ¼")
  • Four cam-action speed clamps
  • Adjustable Side StopA
  • 76-page illustrated user manual plus quick-reference instruction strips

This comprehensive kit equips you with both the hardware and guidance for professional joinery.

Is the Leigh RTJ400 jig easy to use?

Absolutely. The RTJ400 is designed for smooth, accurate operation:

  • Simply center your workpiece on the template and guide the jig across your router table—no balancing the router by hand.
  • Its upright, table-mounted setup helps eliminate user fatigue and ensures consistent cuts.
  • The 76-page illustrated manual and quick-reference strips guide woodworkers of all skill levels in setting up and using the jig properly.

What compatibility considerations should I know before purchasing?

The Leigh RTJ400 requires a 1-3/8″ Porter-Cable style insert ring to properly fit the Leigh e10 guide bushing to your router table or router lift. Make sure your setup includes—or can accommodate—this standard insert.