I have a general question regarding air pressure. Ive notice while looking at various amp / speeds chart thst quite a few show to change air pressure based on material thickness and amperage setting. Why not just leave the air maxed all the time? Is there an advantage to adjust accordingly to thickness?
I set my inlet pressure to 110psi and in automatic mode on my powermax 85 will set the correct output psi. It does have a manual mode too if you need to adjust it for a specialized operation.
75 psi like everyone else and I also leave my amps set at 50 and only vary the cut speed to compensate for thickness. I get awesome cuts with hardly any dross.
I have one of the older red cased lotos 50 amp cutters. Did change out the original pt 31 style torch for a sg 55 style, made it act like a whole different machine. So much smoother and consistent cut.