Kerfmaker | Woodworking Dado & Joint Jig

A Kerfmaker is an essential woodworking tool designed to make cutting perfectly fitting dadoes, grooves, half-laps, and box joints fast and effortless—without requiring any complex math, test cuts, or tedious measuring. By locking in your table saw or miter saw blade's kerf (blade width) and your workpiece's material thickness, this jig acts as an exact physical stop for flawless joinery every single time.

This is my custom take on the classic woodworking Kerfmaker, engineered for easy 3D printing, smooth adjustment, and reliable accuracy in the shop!

🔩 Bill of Materials / Hardware Needed:
2× M3 Brass Heat-Set Inserts

1× M3 × 25mm Hex Bolt

1× M3 × 15mm Hex Bolt

Optional: 10mm × 2mm Round Neodymium Magnets (recommended if using a steel fence/stop)

💡 Features & Highlights:
Precision Joinery Made Easy: Perfect for lap joints, dados, router table setups, and table saw crosscut sleds.

Print-in-Place Friendly: Minimal supports required and optimized tolerances for standard 0.2mm layer heights.

Durable Design: Uses heat-set inserts and standard metric hardware for long-lasting shop use.