Manufacturing And Production Technology
Misrun is a casting defect which occurs due to

Improper alignment of the mould flasks
Insufficient fluidity of the molten metal
Absorption of gases by the liquid metal
Very high pouring temperature of the metal

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Manufacturing And Production Technology
In a shaper, the length of stroke is increased by

Increasing the length of the arm
Decreasing the centre distance of bull gear and crank pin
Increasing the centre distance of bull gear and crank pin
Decreasing the length of the slot in the slotted lever

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