Workshop Technology
In sheet metal work, he cutting force on the tool can be reduced by

Increasing the hardness of tool
Grinding the cutting edges sharp
Providing shear on tool
Increasing the hardness of die

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Workshop Technology
A jolt machine is used to

Ram the sand harder at the back of the mould and softer on the pattern face
Produce uniform sand hardness throughout the mould
Produce uniform packing of sand in the mould
Ram the sand harder at the pattern face with decreasing hardness towards the back of the mould

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