(Prev: Radius Dish Tooling)

I had to make a compass large enough to create a 16 inch upper radius plate. How did I start, and what did I use?

First, I needed a mechanical pencil to present a witness mark on the ¼” MDF. With that found, I needed a method to hold the pencil in a solid position so no slippage would take place when I scribed the line on the surface. I doubled the thickness of the wood holding the pencil, which locked it in place, and drove a wood screw at its center to control the circumference line.

When the line was set on the MDF all I had left to do was jigsaw the plate to size and sand to the line. The upper dish was set at a 16” diameter which was more than large enough to handle the body of the ukulele.

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