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Pit Problem.

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Posted by Robert May on February 26, 2003 21:05:05 UTC

Sounds like you may not have ground the surface well enough in the finer grits. This can be a problem as you have problems seeing the finer pits and marking them for removal.
The slighly larger number at the edge is pretty normal as the polish on a typical mirror ends up being mostly at the center first rather than the edge - this is from the fact that the concavity of the top surface is still going on, even in the polishing of the mirror.
I'll also note that rouge polishing is going to be a lot longer than with CeO polishing as the red rouge is a finer polish than that of CeO.
At this point, you need to make a decision as to whether to keep at it or back up to the last grit and grind the pits out. Personally, I'll keep on going with the polishing. Also, to help remove the edge pits, do your polishing with the tool on the top.

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