Workshop Technology
Riddle is used for

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

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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

ANSWER DOWNLOAD EXAMIANS APP