Skip to content
SupportInstructions & FAQ
CATALOG /RTJ-DWT-IN-001
DeWalt mortising jig for oscillating tool front view
DeWalt mortising jig side angle showing depth adjustment
DeWalt mortising jig installed on oscillating tool
⤢ HOVER TO ZOOM
01 / 04
§ DESCRIPTION

Take your joinery to the next level with our precision-engineered Mortising Jig, crafted for serious woodworkers who demand durability and accuracy. Designed for regular use in the shop, this jig features rugged 1/2" clear acrylic side panels and a heavy-duty 3/8" acrylic top plate to deliver exceptional stability while maintaining full visibility of your work area.

Compatible with:

  • DEWALT 20V Max XR Lithium-Ion Cordless Brushless Compact Router
  • DEWALT Plunge Base for Compact Router (DNP612)

This can be used with either the fixed base or the plunge base

Key Features:

  • Robust Construction - Built with thick 1/2" side panels and a solid 3/8" top plate for long-term durability and repeatable accuracy.
  • Generous Capacity - Accommodates material up to 6 1/4" (160mm) in width, ideal for a wide range of mortising applications.
  • Clear Visibility - Transparent acrylic design allows full visibility of bit alignment and cut placement.
  • Shop-Ready - Designed for the most demanding shops!

Applications:
Perfect for creating clean, consistent mortises in furniture making, cabinetry, and other fine woodworking projects.

 

IMPORTANT
This mortising jig is intended for use by experienced woodworkers familiar with safe tool operation. By purchasing and using this product, the user assumes all responsibility and risk. The manufacturer and seller shall not be held liable for any damage to equipment, personal injury, or other losses resulting from improper use, misuse, or failure to follow appropriate safety procedures. Always wear proper safety gear and operate tools with caution. Tools depicted are not included.

§ WHY THIS JIG

Cut clean, accurate mortises.

Mortising made fast, consistent, and stress-free — whether you're cutting traditional mortise-and-tenon joints or modern floating tenons.

  1. 01 Clamp your workpiece — the wide acrylic sides keep it locked down.
  2. 02 Guide your router across the precision-aligned top plate.
  3. 03 Get straight, repeatable cuts every time — no complicated setup.

Professional-quality mortises with no guesswork. Clamp, guide, done.

§ VERSATILITY

Doubles as an edge guide.

Not just for mortising. Sturdy acrylic sidewalls and a wide surface let you run the router along an edge with stability and control.

Dadoes, grooves, decorative edges.
Dadoes, grooves, decorative edges.

A reliable edge guide for the work that isn't mortising — run dadoes, cut grooves, or shape decorative edge work with the same rock-solid platform. A versatile addition to any router setup.

§ BY THE NUMBERS

Built from cast acrylic.

Cast acrylic resists warping, cracking, and abrasion where cheaper plastics fail — engineered for accurate, repeatable results day after day.

Solid base plate
3/8″ · BASE
Solid base plate

A 3/8″ cast-acrylic base delivers strength and rigidity under heavy router use, with a clear top for full visibility of the bit and cut path.

Thick sides
1/2″ · SIDES
Thick sides

1/2″ cast-acrylic side panels are precision-cut for perfect parallel alignment — eliminating flex and giving a generous clamping surface.

Thick & wide stock
6 1/4″ · 160 MM
Thick & wide stock

Accommodates stock up to 6 1/4″ (160 mm) wide — from trim pieces to full edge mortising on wider panels, with stable clamping throughout.

§ FEATURES

Dialed-in details.

Quickly find center
◆ ALIGNMENT
Quickly find center

Built-in alignment marks and a symmetrical design center on your workpiece with no measuring — quick, easy setup.

Built-in measurements
◆ MARKINGS
Built-in measurements

Clearly engraved markings in both inches and metric give reliable reference points right on the jig — no extra measuring tools.

Spring-loaded thumbscrews
◆ HARDWARE
Spring-loaded thumbscrews

Tighten, then pull out and rotate each knob to a convenient position — ideal for tight spaces and repeat adjustments.

CAST ACRYLIC
Resists warping, cracking, and abrasion.
UP TO 6 1/4″
Handles stock up to 160 mm wide.
REPEATABLE
Precision alignment, cut after cut.
BOSCH 1617EVS
Fits the fixed base & RA1166 plunge base.