Quote:
Originally Posted by nexus
-- unless you redid molds they will always have it
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I don't believe that is the cause; injection molding is very sensitive to temperature and other factors, so more likely is that either the temperature hasn't been even in the mold (or injected material), or the part has been taken out of the mold while it was still soft which caused it to sag.
These kinds of molds are created with very accurate CNC tooling, there's no way that sort of inaccuracy would get in there. And at least the case I received doesn't exhibit that kind of waviness: