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Thin Plate Glass
Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To Posted by Ian McKernan on May 11, 2002 06:46:41 UTC |
Hiyah Ivan. Im making a mirror at the moment and have wound up using 19mm thick plate for a 250mm (10") mirror. Grinds out a LOT faster than pyrex. People tell me thats on the thin side, but if i pay attention to keeping everything turned around often during the grinding i should get a decent mirror out of it and avoid astigmatism. The telescope i bought 12 months ago has an 8" mirror made out of 19mm plate and that is a really usefull little beast. A guy at a glass supplier i spoke to a few months ago said he sells a bit of 15mm to people doing 6" mirrors.
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