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I used to work for a custom big sheet metal forming place. We made buck forms out of the product by pouring cement into the object after laying a couple layers of fiberglass to toughen the skin.
Took a week and was repeatable. Common as all heck in aerospace. Limits are your press size and tonnage
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casual notes from the underground:There are some "experts" out there that in reality don't have a clue as to what they are doing.
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