Making rubber/plastic parts: was: Ladder-shaped belt

dwight elvey dkelvey at hotmail.com
Mon Jan 28 20:48:56 CST 2008



> From: bobalan at sbcglobal.net
>>
> I have tried to make replacement rubber rollers for a Decision Data card punch machine. I first made a mold from casting
> resin then filed it with silicone RTV. Almost worked. The problem
> was that the original part I used to make the mold with had changed shape somewhat and I did not get a symmetric part.

 Hi Bob
 Instead of using a rubber one, measure the diameter and turn one with some
hardwood or aluminum. You'll get a nice concentric one this way.
Dwight

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