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Shaping, Moulding, casting - Coggle Diagram
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Moulding
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Blow moulding
Tube of molten plastic goes inside a mould, then because of hot air blown into the mould, the plastic expands and takes the shape of the mould
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Costly to set up machine, but unit cost is low, so would be used for mass production
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casting
Sand casting
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Drag is bottom, and cope is top
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Die casting
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Gravity die casting requires minimal finishing; waste is minimal because excess metal can be melted down and used again.
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