Print Frame Glass Quality

Cyclamate (Cyclamate@aol.com)
Wed, 01 Apr 1998 20:38:39 -0500 (EST)

Have any of you had any experience in obtaining "optical quality" glass for
your print frames? I have built several contact print frames and have had
problems in getting blemish free glass. It seems that nearly every time I
have bought a new, clean piece of float glass that was pre-inspected by both
myself and the glass man, a small defect or two shows up upon printing. Is
there such a thing as "optical quality" glass? How is optical quality glass
manufactured?

Thanks for any experience or advise you can offer.