Lock Mortises Made Easy
A router and three jigs add up to a flawless fit
Synopsis: Installing a half-mortise lock by hand is a tedious and time-consuming process. So Michael Pekovich designed a routing jig for the shallow mortises, a second routing jig for the deep mortise, and a keyhole drilling guide. The routing jigs are used with a pattern bit. Because they are built around the lock itself, the fit is as good as, or better than, a hand-cut mortise and they take less time to rout. And because the task is split between three jigs, success is almost guaranteed.
Installing a half-mortise lock by hand is time-consuming and tricky to get just right. The process involves mortising for the lock plate, selvage, and body as well as drilling for the keyhole. Everything needs to be sized and aligned precisely to end up with a perfect fit.
So when I decided to teach a class on building my tool chest, which requires three locks,…