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32" F/2.5 slumped project

Mirror Making Optics Reflector Equipment DIY ATM Art
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#26 davidc135

davidc135

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Posted 26 October 2021 - 02:24 AM

Truing the back surface.

 

I'd see what can be done with ring tools. 1/4 diameter for initial local grinding and 1/2 diameter to finish. Car wheel rim for the 16''? I used a 1/2 D aluminium ring to alter curvature on an 8'' and the spherical surface seemed true. Shouldn't take long.

 

David


Edited by davidc135, 26 October 2021 - 02:31 AM.

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