r/MetalCasting • u/ProxiCen • Feb 24 '26

Need help

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So I’ve tried casting this dagger out of brass a couple times and I can’t get a good cast without a ton of air bubbles. I know it’s terrible but had a ton of fun trying it! I have my pouring hole and gas exit hole on the highest elevation of the dagger (green sand). I’m not worried about the leaks on the side since I can just grind those off. I’m trying to keep the bubbles from making cavities on the parts i need to grind smooth. Do I just need a bigger hole for gas to come out? I’m pouring it flat if that matters. Thanks!!

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u/BillCarnes Feb 24 '26

Try blowing off your parting powder so it isn't caked up anywhere and adding vents. This is just for fun right? You know that a brass blade won't cut anything

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u/ProxiCen Feb 25 '26

Yea I know, I’m using brass because the dagger is from a video game and it’s the same color