I'll be making some workshop storage cabinets, so I thought it was a good time to build a shelf pin jig. The design is simple and easy to make, but is very versatile.
The pin spacing is 2" on centre and the jig is made to locate the pins 2" from the edges. The open slot and notches allow it to be used quickly, without lifting the router to find the next hole, which really makes a difference when you are doing a lot of holes.
More details on this project and many others at my website: