Like most people, I've long used a simple perforated-hardboard template and a drill press to make shelf-pin holes. But the drill-press template was not completely accurate because the template holes tended to get bigger with each use. By abandoning the drill press in favor of a plunge router and the jig you see here, I am now able to use the same jig hundreds of times with no variation in the shelf-pin hole spacing. The basic idea is to use one jig, specifically a dovetail jig, to make another, the shelf-pin jig. Use the bits and bushings described in the illustrations both to build the jig and then use it. The dovetail template eliminates measuring and ensures perfect hole- spacing. In fact, the jigs are so easy and inexpensive to build that I made them in several lengths to accommodate various cabinet sizes.
Jerry Collins, Georgetown, Texas