Archive of the former Yahoo!Groups mailing list: MOTM

Interesting Stuff!
If you have access to a surface grinder, you can shave off the epoxy
a few ten thousandths of an inch at a time. You can definitely read
part numbers and see color code through a very thin layer of epoxy
(even if it is black.) I'm not sure which method is more
destructive. If you use the surface grinder it helps to take
pictures because obviously if you miss something it is gone for
good. But it does work. I reverse engineered some synth stuff back
in the 70s that way.