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RE: Kiln Forming Lenses

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Posted by SteveF on June 7, 2000 00:56:52 UTC

Kevin, 1.625" thick is a good thickness for pyrex disks, but this is on the thin side for a 30" diameter mirror. A 2.125" thick disk would be easier to make for an amateur because it would flex less while grinding and polishing.
Newport Glass Works sells a 30" x 2.125" pyrex disk for $1750, this is the commercial anneal blank. It weighs about 122#.
I tried to email you some information, but it was returned to me. Please email me and I will re-send it.
I`m at jsfejes@swva.net

SteveF

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