09-09-2013, 05:58 PM
I've had very good luck letting them soak in a heavy spray of furniture polish (Pledge). The grime seems to come right off with a toothbrush and the polish shines them up. Go-Jo or Goop should do well also, and any treatment might take more than one application. The sharpest thing I would try using as a last resort is something like a wood toothpick.
John KK4ZLF
Lexington, KY
"illegitimis non carborundum"