Workshop Technology
In blanking operation, the clearance is provided on

Half on the punch and half on the die
Punch
Either on punch or die depending upon designer's choice
Die

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Workshop Technology
The purpose of a gate is to

Feed the molten metal to the casting in order to compensate for the shrinkage
Delivers molten metal into the mould cavity
Delivers molten metal from pouring basin to gate
Act as a reservoir for the molten metal

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