No question about that.
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Posted 24 August 2014 - 07:26 AM
I spin grind also . The only zone I see spin polishing is in the very center and when correcting it cleans up in 15 min so I know it is not much . . Another thing with spin polishing I only need a turn table and have a manual over arm .
Posted 05 November 2015 - 08:35 PM
Here's another example in my occasional updates, this time on the short f/ratio side - 18" fused silica f/3.57, 5 sessions as described in general tek, jail bar straight Ronchi, perfect balanced diffraction edge.
This is a hand-held shot of the KE inside focus cutting across axis, as described earlier:
Posted 17 August 2016 - 06:38 PM
Would someone please do some house cleaning. This topic (yeah it's old) starts off good and then gets a bunch of curve balls thrown at it which makes it more and more confusing. Is there an update anywhere ?
Posted 17 August 2016 - 07:57 PM
Ha Ha. Yes I guess you're right. Thanks for the link. Glad you're alive and well.
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