Router Dado Guide. Cut dadoes with ordinary straight bits. This is a guide to cut dados to an exact width by making multiple passes. Bill hylton demonstrates several methods.
The built up spacer blocks are the same thickness as the floating guide so a little material is removed with a sander.
The dovetail bit and the bushing guide should locate the dado when the router is slid along the face. You can also put stock blocks at both ends to make stopped dado cuts. The factory edge of plywood has to be square as it is important that the guide be built square. The dado jig relies on a pattern style router bit to cut the dadoes, photo 2. However, it's a huge hassle to get it all set up and change out the bits. There are many router dado jig options out there. Dadoes are one of the simplest forms of router joinery, and they create sturdy connections for casework construction. Building drawers using a router.
