I was just dealing with some old celluloid/bakelite/plastic scuffed and scratched scales and I wonder how can I clean them properly.
Should I sand them with 1500+ papers? can I run them under buffing wheel or will it melt them?
Usually I just clean them with a cloth and a bit of METAL GLO paste. I find it cleans it very well and its doing wonders to those metal inlays on the scales.

Any thoughts or ideas?
Thanks!