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Old 26-03-2018, 01:45 PM
Stefan Buda
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Stefan Buda is offline
 
Join Date: Jul 2013
Location: Melbourne, VIC
Posts: 823
Quote:
Originally Posted by Baza View Post
Progress is slow, most days I get about an hours work. Currently fine grinding and was amazed at how quickly the rough grind marks were removed from the centre of the mirror. The edge however is a different storey, it is obviously turned down to about 1.5mm in from the outer edge but is slowly coming out. Probably 8-10 hours more fine grinding which should clean up the edge.
Sagitta is at 5.5mm and seems stable, can't see any pits at 10x over the majority of the surface.
Guess it is time to make some test gear.

Pitting at edge.
To fix up the edge, it would be much quicker to just go back to coarse grit.
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