Because of relief of residual stresses during curing

Question:

Because of relief of residual stresses during curing, long unsupported overhangs in parts made by stereolithography tend to curl. Suggest methods of controlling or eliminating this problem.

Answer:

Problem regarding curls are minimized by ceilings or gussets used to hold the material and minimize curl during curing. This can also be minimized in design by reducing the support of the overhang.

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