Quote Originally Posted by Someonenameddavid View Post
i hate to post this URL because people who go there spend hours and dollars buying the weirdest stuff... but they have good prices and service:
http://www.surplusshed.com/pages/item/m2013p.html

has a 15x9 inch optical flat for $5 which you could make into a ground glass screen using jeweler's rouge


but look at all the other stuff too....

David

1/4" thick would be very impractical it's more normal to use 2mm or even 1.5mm but never 6.35mm.

Ian