Versatile Hardware Jig: Connect a second shelf-pin jig for larger spaces; kit includes a shelf-pin jig, 1/4-inch drill bit, stop collar, and sample pack of 1/4-inch shelf pins; ...

I have looked at a lot of shelf pin hole jigs and I think this is the BEST pin hole jig on the market for this reason. First, it has metal reinforced rings where you drill bit goes. This prevents ...

While not as convenient as running a drill through a shelf pin jig, this method has a certain charm and sturdiness that isn’t present in more modern methods of making adjustable shelves.