Workshop Technology
Swab is used for

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

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Workshop Technology
Notching is the operation of

Removal of metal to the desired shape from the edge of a plate
Bending a sheet of metal along a curved axis
Cutting a sheet of metal in a straight line along the length
Cutting a sheet of metal through part of its length and then bending the cut portion

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Workshop Technology
Shift is a casting defect which

Occurs near the ingates as rough lumps on the surface of a casting
Occurs as sand patches on the upper surface of a casting
Results in a mismatching of the top and bottom parts of a casting
Results in general enlargement of a casting

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