In Reply to: Cleaning that Harman Kardon Copper posted by vanmeterannie on June 16, 2020 at 12:15:07:
I would use Simichrome polish with a buffing wheel... or Neverdull. Simichrome is well-known by watch repairmen.
The Mind has No Firewall~ U.S. Army War College.
Edits: 06/16/20 06/16/20
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- RE: Cleaning that Harman Kardon Copper - Cleantimestream 22:23:19 06/16/20 (0)