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In a three piece pattern moulding arrangement, what keeps the alignment between the two parts of the pattern?

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+1 vote
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in Casting-Forming-Welding I by (687k points)
In a three piece pattern moulding arrangement, what keeps the alignment between the two parts of the pattern?

(a) Cope

(b) Drag

(c) Dowel pins

(d) Cheek

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I would like to ask this question from Types of Pattern topic in portion Pattern and Pattern Making of Casting-Forming-Welding I

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Right choice is (c) Dowel pins

To explain I would say: Cope and drag are the portions of upper and lower part of the split and cheek form the middle one. Dowel pins are used for the alignment work in the pattern.

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