How to build a Router Mortising Jig with free woodworking plans.

Router Mortising Jig

Here is the router jig I built recently; I pulled it from Gary Rogowskis book Router Joinery. It is simple and cheap to build. I just used some scrap 3/4 inch MDF. I made the base long enough to easily clamp on my Workmate. The sides are about 20 inches. The sides are rabbetted to make it easy to glue/screw them squarely onto the bottom.

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