Inspired by The Wood Whisperer Episode #63 (Gadget Station pt 6) where Marc uses a one time use jig for installing a SOSS Invisible Hinge (something I’ve done before, only I did it the hard way!), this jig has stops for positioning it on the work pieces and stops to control the router travel for the mortise length. It only takes an hour or two to build. I recently used it for the leg joinery on the Adirondack chair and it worked great. Plus there is a sketchup model and a video on how to make it!
For material, this jig requires:
•3 – 1/4″ x 1 3/4″ T-Bolts
•2 – 24″ Long T-Track Sections
•3 – 1/4″ Winged Knob
•3/4″ Shop grade plywood