Gohelper 3-1-2in Door Hinge Jig – Aluminum Mortise Template for Router, Fits 5/8in, 1/4in, & Square Hinges

Gohelper 3-1-2in Door Hinge Jig: Precision that lasts

Gohelper delivers a durable, professional-grade hinge mortise jig designed to help you achieve clean, consistent recesses for a variety of door hardware. Built from upgraded 6061 aluminum alloy and finished with an anodized coating, this template offers a solid feel and smooth guidance as you route hinge mortises. The result is a precise seat for the hinge, with less chance of drift or misalignment over time.

This hinge jig works on both doors and jambs, accepting 5/8" round, 1/4" round, and square hinges. When mounting on a door, clamps are recommended for stability, though they are not included in the kit. For jamb installations, screws provide the main anchor. A note for square hinges: you may need to finish the corner edges with a chisel after routing to achieve a crisp look.

The template is designed to resist deformation far more than plastic alternatives, helping you maintain accuracy across multiple projects. With a clean recess and a reliable guide, you can drive pilot holes and fasten hinges with confidence, reducing the guesswork that often slows door installations.

Two-in-one practicality: doors and jambs

Whether adding a new hinge or rehanging an existing one, the jig simplifies the process. On doors, two clamps (not included) help keep the template steady as you guide the router. On jambs, screws secure the guide for stable, repeatable results. The compact profile fits easily in a toolbox and travels well for on-site work.

• On doors: clamp the jig for stability (clamps not included)
• On jambs: secure with screws for steady operation
• Square hinges may require corner finishing with a chisel

What’s in the box? A complete ready-to-use kit

Gohelper packages a comprehensive solution so you can start right away. Inside you’ll find a 3-1/2-inch hinge template, a router bit, a self-centering hinge bit, a double-ended screwdriver bit, two mounting screws, and a user manual. Everything you need to begin the project, without hunting for add-ons.

• Router bit included for clean recesses
• Self-centering hinge bit for precise pilot holes
• Double-ended screwdriver bit for quick driving
• Two mounting screws and a user manual
• Lightweight, durable aluminum body with anodized finish

Tips for best results

Secure the jig firmly to the door frame when working on jambs. Expect two small holes on the door itself where the jig attaches. For square hinges, plan to finish corners with a chisel after routing. This kit is designed to streamline installations while emphasizing careful measuring and technique.