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Sub Diameter Tools

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Posted by Walter Hamler on February 1, 2001 01:33:03 UTC

I just got a 12.5" f/5 ft mirror that is almost completely polished. I need to make a tool to put a lap on to complete. Question - could I get away with my 10" tool that I used to make my 10" f/6.8.
It would be sub diameter, but not by much. What is the ideal sub diameter tool size to parabolize a 12.5" mirror? Any problem areas I should look for?

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