Re: [PPLetterpress] Nuarc vacuum frame
- Hi Michael,
I use a Nuarc vacuum frame that sounds like the one you describe. I put a box
with four flourescent UV bulbs on top of the glass for exposure.
I considered replacing the glass with Kreene because I was getting irregular
exposure due to poor contact under the glass, despite good vacuum pressure.
Then I realized that the problem was that the vacuum actually was bending the
glass down slightly, allowing irregular contact between the neg and the plate.
The simple solution was to add pieces of matboard around the plate material to
support the glass further out. That solved the problem for me and now I get
fine contact and exposure. The glass itself doesn't seem to me a problem for UV
I use the steel backed MS152 Miraclon plates from Gene Becker, and do washout
by hand. Happy to say more if it might help.
Best wishes, Tom
Now It's Up To You Publications
157 S. Logan, Denver CO 80209