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What should the radius of fillet be to allow fillet sharp angles?

(a) More than 15mm

(b) Less than 10mm

(c) Between 10mm and 15mm

(d) More than 20mm

The question was asked in examination.

Origin of the question is Jointing Materials in portion Pattern and Pattern Making of Casting-Forming-Welding I

1 Answer

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The correct answer is (b) Less than 10mm

Explanation: Radius of the fillet in order to allow filleting sharp angles, must be less than 10mm, in all classes of pattern. If the radius exceeds this value or goes below it, there would be defects in the cast.

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