van de graaff tube (fwd)

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---------- Forwarded message ----------
Date: Sat, 27 Nov 2004 18:00:44 -0000
From: colin heath <colin.heath4@xxxxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: van de graaff tube

hi all,
        i was given some tube from work which is 7/16" wall thickness so i thought i haver rollers waiting and this is perfect for mounting the rollers on. so my question is, this stuff is black pvc (i think) but worst case it could be conductive! will this affect things? im guessing it wont as nothing will be touching it but you never know. i know black pvc works fine as a tesla coil former but this is a different beast. i will be aiming for 2.5" wide belt and this stuff is 4" and i hope to have 16" sphere on top.
any help much appreciated
cheers
colin heath