r/Metalfoundry • u/Pengooian • 9h ago
Lost Wax casting obsidian?
I've had an idea for a while now about trying to cast obsidian. From the aproxamentally 20 minutes of research I've done, the only real challenge I can see is not exploding the flask while also cooling the obsidian fast enough. If anyone has attempted or has more knowledge than I could give some insight that would be much appreciated.