I am making a medicine cabinet and I want to use a stopped, sliding dovetail joint so that the joint will be hidden. I can cut the sliding dovetail in the side boards with a dovetail bit in a router, but what is the best way to cut the corresponding dovetail in the end grain of the joining board? I have tried making some jigs, but they always seem to be precarious to use.
(Please excuse the poor drawing. I'm not so good with GIMP yet.)