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The Prop Building Guidebook, 2nd Edition by Eric Hart

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fourteenmolding and casting

 

 

 

A prop builder makes a mold when they want multiple copies of an object. It may cost too much or take too long to construct matching items individually. It can also be used when a single prop has a repetitive detail, such as a carved rosette. The detail can be molded from scratch or from an already existing item, then cast, and attached to the prop. They are also useful in the prop world for making breakable items, such as statues, where many copies can be produced out of a cheap, easy-to-break material for minimal cost.

Another reason to make a mold is when the final prop needs to be made from a different material from the prototype or model was constructed with. If you make a prop out of oil clay, it needs ...

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