Workshop Technology
The binder commonly used in making oil sand, is

Inorganic type binder
Any one of the listed here
Clay type binder
Organic type binder

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Workshop Technology
Swab is used for

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

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