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Subject:Re: Leveling the van- shims made of teflon or nylon.....what's up!
From:Frank Grunthaner
Date:Sat, 12 Jan 2002 00:55:03 EST
In a message dated 1/11/02 9:23:36 PM, maestroman@WORLDNET.ATT.NET writes:

<< Not Good:
Teflon          [deforms indefinately]
Acrylic  plexiglass  [brittle;see below]

Hmmm, anecdotal evidence on PMMA or polymethylmethacrylate (limited
statistical basis of 2 units) 16 + years, no change in thickness,
transparency or phase. Hard to do better, easy to do worse.

Frank Grunthaner

Lexan   polycarbonate   [stress cracks from solvents/exposure]
ABS   [attacked by solvents, UV]
Styrene [see above] >>