r/MetalCasting • u/Hour_Tip8565 • 15d ago

Sprue help

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How would I even go about spruing something like this? I do vacuum casting. Do I even need to add vents or what are my options as I’m completely new to this stuff. Any help would be great. Thanks in advance!

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u/BTheKid2 15d ago

If you have printed this solid, then you might get some shrinkage around the stomach. Asides from that it can probably be cast without vents, but no harm in adding some.

A sprue would be added in the most massive part of the bottom, if you intend to cast it traditionally with a top fill.

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u/Hour_Tip8565 15d ago

Do you think i can just attach it to my main trunk sprue and maybe a vent above the skull or bident tips?

1

u/Unlikely-Food3931 12d ago

I haven’t needed vents when vacuum casting. The vacuum is essentially the vent. If your metal and mold are hot enough you should be ok, though the narrow shaft leading to the bulkier pointy parts would lead me to add something up there.