Hinge Mortise Router Guide

This is a template for cutting 3-1/2 inch mortises for door hinges with 5/8-inch radius corners using a router with a 1/2-inch top-bearing bit. The photos should be pretty self-explanatory.

I trusted the packaging on my hinges and did not measure them before printing, therefore I had to tweak the finished template to make it 90mm long instead of 3-1/2 inches. The SCAD file and the STL account for this; you can adjust scale factors in the SCAD if you like, or of course scale the STL in your slicing software. I would suggest pausing the print a few layers in and double-checking the dimensions against your actual hinge.

"Measure once, cut twice!" That's my motto... .