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[TCML] crowned pulleys

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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