Hello,

Has anyone been doing research on polishing or reducing scratches on
plastics, especially translucent colored poly(methyl methacrylate)
(PMMA/acrylic)?

The Novus System, which has been successful for clear PMMA, often creates
hazing and cloudiness on colored PMMA. It requires a finer polishing grit.
I've heard some people have success with alumina 0.05 microns in a water
slurry, but it has not worked for my tests.

I have also been reading up on different publications for filling scratches
on PMMA face-mounted photographs. I am curious about testing their methods
for sheets that have more overall abrasion rather than local gouges.

Interested to hear what anyone else may be doing!

Thanks,
Christine

Christine Haynes
Assistant Objects Conservator
Preservation Arts
[formerly SF Art Conservation]
[email protected]
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