Thank you D.C., the one i,m using keeps cutting out, due to the thermal cut out. Its a wizarc?? its an old one, whether thats got to do with it i dont know. I was only getting through 1/2-3/4 rod, then it cut out. The penetration wasn't that great either. Its only got high and low settings, the higher one cut out quicker. I was using 6013 rods, and also thicker ones. The thicker ones couldnt get a start?? I,m able to borrow a better unit with more adjustment, so i will see how i get on with that one.