I tried cutting a piece of exp metal again to refresh my memory of what happens. The arc shuts off after every V in the metal and has to restart. It's slow going and I can do it faster with a grinder. I was also worried this arc action might wear the electrodes quickly. The videos I have seen the arc remains constant and you can move the torch at a steady pace just like cutting solid metal. I have to wait a second for each and every arc to restart. Just takes way too much time.