Workshop Technology
The directional solidification in casting can be improved by using

Chills and padding
Chaplets and padding
Chills and chaplets
Chills, chaplets and padding

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Workshop Technology
Swab is used for

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

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