I am using a Thermodynamics Cutmaster 52. It will not start the first cut unless I pull the trigger on the torch. Or if I initaite the cut a second time. But the air needs to be coming out the end. It will almost always start and stop on a complicated multi piece job.
Today after cutting multiple pieces it tried to start the cut about an inch off the plate. I restarted on a fresh piece and it worked fine.
Can you pick where you want to resume your cutting when this happens.