Etcher's question

[rutabaga bob]

Any pcb etcher who uses unsensitized copper:
  I recently scavenged an old amp, and one of the things that came out of it is a 3-5/8" x 10-3/8" board that has masked copper on one side...I am guessing it just may have been used for shielding.  Not knowing anything about this stuff, I am asking if there is a way to remove the masking to make the board useable, and, if so, does anybody want it? 

[GGBB]

Acetone sometimes works (depends on the mask) - may take a bit of soaking. Sandpaper will work - just don't overdo it it and strip the copper.

[rutabaga bob]

Thanks, Gord!  I'm basically trying to see if anyone would like to have it.  It's free...