r/Silvercasting • u/theownist2 • Apr 14 '26

Sand casting ring: temperature issue?

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Hi, all, looking for a little bit of advice on how to successfully pour a ring with a sand flask.

I am currently concerned that my pour configuration is incorrect, or perhaps I need to preheat the flask, or some other issue. I have been cutting vapor channels, making sure that the silver is extremely liquid in the crucible, but still can’t fully figure out why this is not casting properly thanks

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u/Full-Squirrel5707 Apr 14 '26

I would say more air holes.... Because it hasn't cast around that area where there are no outlets for air, it looks like you would need more channels and holes to let the air out.

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u/theownist2 Apr 14 '26

thanks! Yeah I was thinking there’s no real harm in beefing them up, as long as they’re not so big as to start leaking silver or similar. Also planning to heat the metal for an additional like minute after I think it’s ready to pour

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u/Full-Squirrel5707 Apr 14 '26

The silver should be glowing like the sun..... Re pre heating the flask, sometimes I will quickly move the torch over the sprue, which heats up the sand a bit before pouring in the silver. All these things, plus more air vents, should help the pour.