Categories of Metal Casting Processes

1. Expendable mold processes - mold is sacrificed to remove part

--Advantage: more complex shapes possible

--Disadvantage: production rates often limited by time to make mold rather than casting itself

2. Permanent mold processes - mold is made of metal and can be used to make many castings

--Advantage: higher production rates

--Disadvantage: geometries limited by need to open mold+

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