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Risks of casting
Molten substances
Mould leakage
Irritants
Gravity die casting
Often used with lower melting point metals like aluminium
Pressure Die Casting
Used for large batch/mass production
Investment/sand casting
Foam version of desired shape
Pack sand tightly around it
Pour motlen metal, foam melts
Metal takes shape of foam
Split sand casting
Pack sand in bottom half
Press in mould shape
Pack sand on top, make runner/riser
Pull mould apart, remove mould
Pour metal