tripoli is a buffing compound, aluminum silicate abrasive that you apply to a spinning buffing wheel. tripoli is the right stuff for copper. You can bring any metal to a perfect mirror finish with wet dry paper used wet (or it clogs too quickly), you'll find the finest grits at autobody supply places. I find fastest is file ...wet/dry 200... wet/dry 600 ...then either w/d 2000 or buffing wheel and you're optical
if flatness is important do it on the surface plate - polishing/sanding is not a precision op though so at some level of magnification what you produce will be slightly convex surface
Last edited by Mcgyver; 02-17-2006 at 10:05 PM.
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