Focal Point cuts glass in many different sizes. It also comes nicely beveled. I imagine they could cut it in any size you need. The set of their glass I bought for the Durst 138 is also optically white and thinner than window glass (2mm I think). Very good stuff in my opinion. But I don't know if a ground sheet could be optically better. Probably, but I doubt I could see it since I see no issues with the Focal Point stuff at my small enlargement sizes (20x24 from 4x5).
Originally Posted by Bob Carnie