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Old 08-03-2023, 01:08 AM   #736 (permalink)
freebeard
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Why would you want super flat? A slight crown adds strength. Flat surfaces will show any imperfection when they are rotating.

Get some (oversize?) pizza pans, drill a small hole in the center and spin form them just like Moon does. Steel would be harder than aluminum, but I think two handheld caster wheels might do it.
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