Well, I have 4 20# cylinders that are full from when they made the switch to the OPD valves, they were free, and the with the brick being free, i figured it would be worth it to decide if i want to go square or cylinder forge body. Ideally, I have been thinking that I want an upright cylinder with the opening in the side, and the burner lower than the opening. I have been aroung this type before and seemed pretty efficient. yes you have to hold the piece while it heats, but at this point i wouldnt work more than 1 piece at a time anyway
