This little 250 MIG welder is more than capable welding 25mm thick steel and is easy to move to difficult locations. I carry out maintenance at a recycling company and this machine has proved invaluable with a wide variety of repair and fabrication work. With the wire removed it is light and compact enough to take it up on the narrow walkways, and a long gas pipe reaches the ground. These machines require a good power supply, and we use a 32 amp single phase socket. Many thanks for a superb machine.