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Option B -
Vertical Orientation of Wax Patterns on Sprue |
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This
orientation has good part packing and volume efficiency, but it has two shortcomings.
-
Wax in the lower half
of the individual cavities cannot escape easily and will be trapped in the lower
portion of the mold cavity, possibly causing gas holes in the casting.
-
When the metal flows
into the cavity, the vertical drop from the gates will cause splashing and turbulent
flow, which can produce casting flaws.
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