Gohelper 3-1/2-inch Fixed Size Door Hinge Jig – Aluminum Mortise Template Kit for Router

Overview

Gohelper presents a 3-1/2-inch fixed-size door hinge jig built from upgraded 6061 aluminum alloy with an anodized finish. This combination delivers a rigid, smooth guide that resists deformation, helping you achieve consistent hinge mortises and a clean, professional appearance for each installation.

Designed for both doors and jambs, the template aligns cleanly with hinge locations and guides your router to cut precise recesses. It supports 5/8-inch round, 1/4-inch round, and square corner hinges, making it versatile for common door hardware. Clamps are not included; for doors you secure the template with clamps, and for jambs you screw it in for optimal stability. Note that square hinges may require finishing corners with a chisel after routing.

Durable, ready-to-use construction

Engineered for durability, the Gohelper hinge jig resists wear and deformation better than plastic alternatives, maintaining accuracy through many installations. The anodized surface provides a protective barrier against moisture and minor nicks, helping you retain a crisp edge each time.

Complete kit out of the box

Beyond the hinge template, this all-in-one kit includes essential bits and hardware to complete a hinge installation with fewer trips to the toolbox.

• What’s included:
• 3-1/2-inch hinge template
• Router bit
• Self-centering hinge bit
• Double-ended screwdriver bit
• Two mounting screws
• User manual

Helpful tips and real-world use

Many users appreciate how quickly the template helps establish a precise mortise, reducing guesswork on first-pass installations. The tool’s design emphasizes intuitive setup, so you can focus on alignment and depth control rather than wrestling with a jig.

• Ease of use: The template locks into position, guiding your router for clean recesses.
• Versatility: Works with multiple hinge styles, including square corners, for interior and exterior doors.
• Time-saving: A complete kit reduces trips to the hardware store and minimizes setup steps.

Important notes

When installed on a door frame, expect two small holes left by the mounting screws; these can be filled if desired. Squared hinges may require corner finishing with a chisel for a crisp look. Clamps are not included, so plan accordingly.