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Old 16th Oct 2018, 5:32 pm   #4
OldTechFan96
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Join Date: Jul 2017
Location: Newcastle Upon Tyne, Tyne & Wear, UK.
Posts: 1,181
Default Re: DIY. Idler wheels

It looks to be a 3D printed plastic surround that has been attached to the metal part of an idler wheel. With a rubber belt glued around the outside.
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