The dynamic of thin and thick sections and their cooling times creates warping as well.As would be expected, as a thick section cools it shrinks, and the material for the shrinkage comes from the unsolidified areas causing the part to warp.
Other causes for warping might include the molding process conditions, injection pressures, cooling rates, packing problems, and mold temperatures. Resin manufacturers’ process guidelines should be followed for best results.
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