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Old 14-01-2015, 10:29 AM
cfranks (Charles)
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cfranks is offline
 
Join Date: Feb 2008
Location: Tungkillo, South Australia
Posts: 599
Hi Ralph,

I agree with Dave, don't go back to 80 and don't use Tool-on-Top unless you really overshoot. I wouldn't have used 80 grit on a 7" mirror f/13 anyway but then I never made one!
F/13 is a long focal length, what are you going to use it for?

Charles
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