I recently acquired an old (1974) Buehler flat 8" rotating polisher.(Old is an subjective term with lapidary equipment.) It has two speeds, no RPM listed, so I'll call it slow and fast. I will polish agates and geodes on it using paper diamond grinding polishing disks. Is there a type of agate, turquoise, geode or other material that should be polished at a slowed speed? Would it be slower when I will use diamond pastes at the final polish stages?
From Taco Rock - April 19, 2011 at 10:57:49