Received replacement quickly and tested this machine. There are no problems with the exchange. 5/5 would buy if looking for an inexpensive welding machine for home projects. ** First machine may have failed while waiting for replacement ** Attempt to weld a test bead with e6013 in both forward and reverse directions. This machine couldn't even hit the ark. I fired up one of my other welders to make sure it wasn't just bad ground. nope This welder does not weld.