Dulcimer Tuning Wrench

I found this dulcimer at a garage sale for a good price, but it was all out of tune and had no way to tune it.  The strings attach to these square pegs that can be tightened or loosened to adjust the tension.  As I was considering how to make a tuning wrench, I decided I might as well use the most wrench-shaped item to begin with to avoid having to do extra work.  I had this extra chuck key and tool post wrench lying around from when I had my machine re-shipped to me with an extra box of tools, so I figured it would be a good opportunity to get used.

I decided to use the tool post wrench.  Good thing they didn't make it of hardened steel, otherwise I wouldn'tve been able to saw and mill into it!

I chose an end mill with about the same diameter as the width of the pegs on the dulcimer, and milled a slot into the wrench.

Perfect fit! Now I just gotta learn how to tune and play the thing!!!