Manufacturing And Production Technology
Fixtures are used

To check the accuracy of workpiece
For holding the work in milling, grinding, planing or turning operations
For holding and guiding the tool in drilling, reaming or tapping operations
None of these

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Manufacturing And Production Technology
The primary purpose of a sprue in a casting mould is to

Feed the casting at a rate consistent with the rate of solidification
Help feed the casting until all solidification takes place
Feed molten metal from the pouring basin to the gate
Act as a reservoir for molten metal

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