Does my member of this group have experience with CO2 + sodium silicate molding foundry sand? My question is how to best "gassify" the prepared sand after molding. Thanks, David
- posted
15 years ago
CO2 and sodium silicate molding
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- posted
15 years ago
This subject was beat to death recently on the castinghobby email list . Several suggestions surfaced , but the winners were to attach a long bigbore hypodermic needle or a ball filling needle to a hose , fed from a regulator at around 3-5 psi . Insert gently and let'er flow . Also suggested were the small cartriges that are used for CO2 pistols and tire inflators , but there were some problems with regulating the flow .