AnubisAnkh

Thanks Frosty. I’ll see if I can find the Burners 101 thread.  

Hey all, I’ve built a gas cylinder foundry furnace and a burner.  It works great for melting Aluminum, but I want to melt copper. I ran it for like an hour and a half. The copper got bright orange and shimmery and very soft, but didn’t quite melt.  I feel like I was very close to melting temp and just need a few (hundred) more degrees.  I’ve adjusted the color in my photo to more accurately show the color (though it was glowing brighter). What can I do to eek some more heat from my burner?  I ran it up to 20 psi. My burner is using a .023 mig tip. The burner is 3/4 pipe. Should I use a mig tip with a bigger hole? A wider diameter pipe? Higher psi?  Should I add a blower to blow air down the pipe? Will any of those things help?  Anything else I should consider?