Workshop Technology
In blanking operation, the clearance is provided on

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

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Workshop Technology
The purpose of a gate is to

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

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