Workshop Technology
In blanking operation, the clearance is provided on

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

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Workshop Technology
Swab is used for

Reinforcement of sand in the top part of the moulding box
Moistening the sand around the edge before removing pattern
Smoothing and cleaning out depressions in the mould
Cleaning the moulding sand

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