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[ATM] annealing
Dave,
>United Lens, a large annealer of all kinds of optical blanks,
My friend just bought 5 large precision-annealed blanks from them. Three have to be returned because of poor annealing. I have seen the photos of them thru full-size polarizing sheets. Even the "good" one shows Richard Schwartz' Satanic Cross. Is there somebody better to buy Pyrex from? (Please don't say the "N" word!!!)
John
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