1. Describe the effects on mold design, including the required change in the size of the risers,…

1. Describe
the effects on mold design, including the required change in the size of the
risers, runners, chokes, and sprues, for a casting of a given shape that is to
be doubled in volume.

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2. The
result is a casting with better dimensional accuracy, lower porosity, and
improved strength as compared to conventional lost-foam casting.