A welder often faces the problem of using a traditional MIG gun 3 to 4.5 metres long, when his welding equipment is not close enough to the point of working or the work piece is so large that the traditional MIG gun does not reach to the top of it. The traditional solution has been to use a Push-Pull system or to bring the equipment close enough to the work using a boom system, however these options do increase the welding costs. With the new Kemppi DL-teflon liner and its two-layer construction, it is now possible to construct very long MIG guns – WeldSnake™, with the aim of providing a cost-effective solution for aluminium and stainless steel welding. Kemppi WS MIG guns are suitable for use with 1.2 mm aluminium and 1.0–1.2 mm stainless steel wires.