I have had the same bubbling and am wondering what is causing it. I dried my molds in my oven for hours (120 deg C), left them for a week. Is it remaining moisture in the mold? Aluminium too hot, wrong mold material? I used fire mortar, the kind used in pizza ovens and also inside my forge. Should I cure the mold at higher temps? Any help would be gratly appreciated
Aluminium Fails
in Smelting, Melting, Foundry, and Casting
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I have had the same bubbling and am wondering what is causing it. I dried my molds in my oven for hours (120 deg C), left them for a week. Is it remaining moisture in the mold? Aluminium too hot, wrong mold material? I used fire mortar, the kind used in pizza ovens and also inside my forge. Should I cure the mold at higher temps? Any help would be gratly appreciated