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Creating a Costume/Cosplay from E.V.A Foam
Thank you for offering your expertise! You've described exactly what I'm doing: pushing on the tube past the point of elasticity and just to the start of plastic deformation. A 20 foot stick of cold-rolled steel up to about .090 wall thickness will deform permanently with just careless handling!So what I'm doing, without using calculations, is feeling for the moment that steel begins to give way. One just has to be sensitive to the "shoulder" of the stress/strain curve.The geometry makes a difference because a piece of 1" x 2" tube is much much harder to bend in the 2" direction. I can barely do it with a stick of .065 wall.
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