Sign my

MDC 3tr Shay


December 29, 2005

When working on the worms I took another road than Jeff Johnston describes in his book. Jeff advises to sand them with 600 grit paper. That's all right of course but a rather tedious job. I put a polishing disk in my Proxxon, put on some polishing paste and off I went. In less than three minutes all six worms were polished, all burrs were gone and the surface of the worms was smooth as baby skin. At last a fast and easy job. Certainly no wear to expect from these worms.

Polishing the worms

Left: an unpolished worm, right the finished result. I also polished the shaft also reducing wear.