While the manufacturer (T-D) claims 1" pierce capability.....that unit will definitely require some special technique in order to accomplish the task! It pierces 3/4" fairly well....to do 1" you would need to pierce...then while piercing raise the torch to work distance to approx. .5 inches....then do a creep start to keep the pierce spatter away from the nozzle. If this is not done you will have very short nozzle life....Other than that...edge starting should be done on everything thicker than about 3/4".
Jim |