07-05-2019, 08:17 AM
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Freeform rocketry advocate.
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Join Date: Jan 2008
Location: Claremont, CA "The intellectual capitol of the world."-WSJ
Posts: 3,780
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I would guess over 1/16". On 4" I prefer over 3/32". There is a minimum reasonable for the process itself that doesn't apply, for example, to fiberglass. Blow molding for example would be 1mm to 1.5mm.
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