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Sharp internal corner of the casting also causes the misrun defect in the casting.

Sharp internal corner of the casting also causes the misrun defect in the casting. Correct Answer False

Sharp external corners can also produce casting defects. A misrun defect is basically caused by sharp external corners of the casting. External corners abruptly lose heat to the surrounding mould material and as a result, the corner might not fill completely that result into a misrun defect.

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Misrun is a casting defect which occurs due to
The casting defect misrun occurs when:
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It is not necessary to avoid any sharp internal corners from casting design, as it causes very negligible problems.