In sand moulding, the thickness of sand mould and bond strength should be high as much as possible to avoid sand inclusion in machine parts.

In sand moulding, the thickness of sand mould and bond strength should be high as much as possible to avoid sand inclusion in machine parts. Correct Answer False

High bonding strength of sand in mould mixture and its thickness does not avoid the problem of sand inclusion in machine parts greatly, and even this reduces permeability of moulding mixture in a great amount which results into the formation of castings with defects like blow holes.
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