GL: Side curtains / Pledge

[Keith]

John Gill wrote: "Sorry to say that your canvas guy is mistaken, 
particularly with
regard to acrylics (Plexiglas and Lucite) or polycarbonates (Tuffak
and Lexan).  Citric oils and acids will cause crazing - small
internal fractures in most plastics.

John Gill
(a former writer of design and fabrication manuals for Rohm and Haas
Company which invented Plexiglas acrylic)."
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I'm sure you understand that the clear side curtains are NOT any of the 
above materials. They are made of plasticized PVC (poly vinyl chloride) or 
"vinyl" for short. Myself and others have used lemon Pledge for years, and 
it works great on those materials. No need to look for non-scented.

Also, acids don't always cause crazing in most plastics... why does 
hydrofluoric acid come in plastic bottles? Because it'll dissolve glass! 
Muriatic (hydrochloric) acid comes in plastic bottles as well. Many other 
plastics are used specifically around acids because of their non-reactive 
nature.



Keith (chemist)
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Opportunities always look bigger going than coming.