Rohm Drill Chuck

[EdK]

The acetone didn't do a lot to the plastic. That's some tenacious material whatever it is. I cleaned the chuck up a bit more, especially the surface that the jaws ride on. Now it's pretty smooth throughout the full range. I dripped a liberal amount of Starrett instrument oil alongside the ring gear and worked the chuck and now it's quite smooth. At least it's usable now even though it looks like it has some sort of skin disease.  

Ed