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Old 30th Oct 2004, 5:54 pm   #11
ppppenguin
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Join Date: Dec 2003
Location: North London, UK.
Posts: 6,168
Default Re: Equipment sitting on top of Equipment

Rubber feet are notorious for marking all sorts of things.

PVC and polystyrene should be kept apart. The plasticiser in PVC dissolves polystyrene and the PVC goes hard. This is particularly relevant to PVC insulated domestic wiring and polystyrene thermal insulation. I have a polystyrene drawer full of PVC grommets. The inside of the drawer is badly pockmarked.
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