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Old 10-04-2017, 03:05 PM
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DavGoodlin DavGoodlin is offline
Motorola Minion
 
Join Date: Aug 2011
Location: near Strasburg PA
Posts: 3,400
Those inserts look like they could be made on a lathe from sheet aluminum. Shaping them using hardwood over a wooden dowel shaped on the end like the mating surface of the plastic knob.

The real trick would be to keep the center smooth as it needs the lathe's "dead center" to keep it in place while shaping.

Never tried it but just an idea from my experience in a shop. I have an HH Scott stereo receiver missing several similar aluminum "caps" from its knobs. The glue was not worth crap in the old days.
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