[TCML] crowned pulleys

[Ken or Doris Herrick <kchdlh@xxxxxxxxx>]

A little off-topic but perhaps the moderator will tolerate it.  Those of 
us who might contemplate making a Van de Graff generator would likely 
need crowned pulleys.  I note that the Surplus Center 
(www.surpluscenter.com) currently offers item 1-2940, a "roller strip", 
at $2.95, which is purported to contain 13 removable crowned nylon 
pulleys, each 3/4" diameter x 1" wide.

Ken Herrick
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