@George_Allen before you try a gas setup you’d better research it some. The flame comes in from the side. If you don’t know what you’re doing there’s definitely some hazard then too. One Youtuber that I follow did a good series of videos about how he got started and progressed with metal casting. I’d say he’s reached a good point with it all now too. He can do copper now. But you get to watch him from when he starts all the way to when he figures things out. Which I think is pretty valuable. So go back in his history and watch his older videos up to his newer ones to see what he had trouble with, and how he figured it out. Here’s a link to his channel https://www.youtube.com/channel/UC3dmgnqBSqlENPwPcxZ33Cw/videos