How to Make Dovetail Keys
I’ve built a few boxes with mitered splines on the tablesaw, and now I want to try my hand at dovetail splines. I know I can use a jig to cut the slots in my box at the router table, but how do I make the splines?
John Mihalick, Pensacola, FL
The secret to getting the splines to fit is to use the same dovetail bit you used to cut the slots.
Start by cutting the slots in the side of the box with a dovetail bit and a jig. Once all the slots have been cut, raise the dovetail bit about 1/16-in. The extra height makes the splines, also known as dovetail keys, slightly taller than the slot, and easier to trim to fit. Then bury the bit about halfway into a zero-clearance fence on your router table. Make the keys from a piece of stock…