On Sat, 4 Dec 1999, Jacques Augustowski wrote:
>
>
> > Michael,
>
> Well, if you are careful not to scratch use acrylic or Plexiglas. They transmit UV
> better than glass. Even if you have some minor scratches polishing will take care.
>
> Jacques
I had a Gravity Works contact frame with soi disant "UV transmitting
plexiglas." For *gum* it was about 10 % faster, otherwise the same or
worse.
Judy
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