So after accumulating a lot of aluminum swarf I built myself a foundry. Turns out casting is pretty fun. Anyone else jump down this rabbit hole? Started as an empty helium tank. Some ceramic insulation blanket 1” a little bit of refractory cement and a burner made out of black iron pipe and a propane nozzle made from a copper welding tip. Works great. Green sand is the hard part. Easy to make. Hard to get moister just right expecially when it’s hot out side since it drys very quickly. I purchased some petrobond which is fantastic and produces nice surface finishes but it’s pricy. I’ll build on this thread as I gain experience.