Using bentonite as bonding agent to create sand mold. Best for producing smaller parts. Parts are generally less than 50-100 kg in weight and sometimes require cores. Lower tooling cost when compared to other molding method.

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However, green sand casting is not suitable for parts that have a lot cavities as adding multiple cores would increase the production cost. And due to it's low sand compressive strength, green sand casting is not suitable for medium to large parts.