Hi I’m Mike Rogers and we are making this
video for expertvillage.com on the principles of mig welding. Lets have a look in the machine
itself. The whole idea of mig welder is that you use a wheel of steel wire which is fed
by a electric motor through this holes, up to the top, and it is this wire that creates
the weld that you are creating the steel with. At the same time ..gas such as this shield
goes straight through the machine, through the cable, up to the torch, when you pull
the trigger you get gas before you get fire. This gas creates a strode around your whirlpool
and prevents the world from oxy and give you a good quality weld. Thank you.