Quote:
Originally Posted by Shiraz
I was still surprised though that cured silicon could distort the mirror so much, although I recall a post by Mark Suchting on a distortion problem he had with silicone attachment of larger mirrors. Regards ray
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When I got the primary and secondary back from coating on my 5" I freaked out. So bad I couldn't even focus. Turned out to be the gel. I had just glued the whole secondary to the alu holder. Mark S. told me only 3 dabs 1 to 2mm in diameter and use lollypop sticks as spacers then let cure. That did the trick. But I was packing sh|t for a little while before though.
