half lap jig.
I built a nice half lap jig to make some cabinet doors. I took a piece of 1/8th hardboardand screwed two 2" x 3/4" x 16" oak boards to the hardboard so they are parallel to each other. I then screwed a 3/4" piece of wood at 90 degrees to the parallel boards and on top of them. I then slid my stock under the cross piece and next to one of the parallel boards. The cross piece becomes a fence for my router. I made a pass through my fence at the appropriate depth with my router bit and used that cut line to line up with my marks on my stock. It worked pretty well for me. I got the idea from a woodmagazine article. Ill post a picture if anyone is interested.
"If you give a man a fish, you feed him for a day, but if you teach a man to fish, you feed him for a lifetime."