Making the Reinforcement Back Strips

I had been making instrument for some time and always made these little reinforcement back strips by hand. It was easy enough to cut them to the right width and sand them with my drum sander to the right depth, but, I always just did the round over by hand with sandpaper. Unfortunately they never had that clean, precise look that I was striving for in all of the rest of my guitarmaking.
So I finally decided to do something about it. After thinking for a while I came up with a very simple, but, I believe, elegant, solution using my Grizzly oscillating drum sander. You could do the same thing with a drum sander in a drill press so anyone reading this can accomplish the task in a very precise way.
It seemed to me that the real issue was figuring out a way to hold these small 5/8” wide and thin .120” strips so that a bevel could be applied to both sides in a consistent way. Here is my solution.

The jig is nothing more than a piece of 3/4” plywood with a 45 degree slot cut into its’ side. Make the plywood and groove longer than the table for your sander or drill press.
Once you have cut the plywood, insert a piece of square reinforcement stock into the slot and slide it toward the sander. THE SANDER IS OFF FOR NOW. Check how the edge will meet the sander. When you are satisfied with the amount of material being removed, clamp the board in place.

Turn on the sander. Insert a strip into the slot and push it past the sander. The sander will remove a small amount of material and leave the edge beveled. Turn the piece around and do the other side.

Now, the piece is beveled on both sides and you can decide whether or not to round the edges. I decided liked the beveled look and leave it that way on my instruments. The choice is yours.