Yes, a propane forge can get hot enough to forge weld or even burn steel. The forced air burner is the better choice for heat because the fuel/air mixture can be easily altered to be oxidizing, neutral, or carburizing. Venturi burners are limited in their adjustment and usually cause excess scaling. I have been experimenting with loading pictures into the Gallery and I'm going to try posting one of my vertical welding forge here. It's powered by a forced air burner built according to Darren Ellis' design. It will easily reach welding heat while just loafing along on 2 psi of propane.
