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Q. Explain the Cushion Materials which used in moulding sand?
These materials when added to the moulding sand burn and from gases when the molten metal is poured into the mould cavity. This gives rise to space for accommodating the expansion of the sand at the mould cavity surface. Wood flour, cereals, cereal hulls and cellulose etc. discussed above are called as 'Cushion materials'.
The Center Mark Command We can use Center Mark command to annotate a circle or an arc with a cross at the center.Illustration above shows a center mark added to a circle quick
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How many types of Foundations are there Foundations are broadly classified into two types, viz., shallow and deep foundations with respect to the width (B) and depth (D) below
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