HOW DOES THE MIG WELDER WORK?
A MIG welder has a couple of different parts. If you open one up you will be able to see something like the pictures below The Welder Inside the welder you will find a spool of MIG wire and a series of rollers that pushes the wire out to the welding torch. There isn’t much going on inside this part of the welder, so it’s worth it to take just a minute and familiarize yourself with the different parts. If the wire feed jams up for any reason you will want to check this part of the machine out. On larger power MIG welders you the wire feed unit can be separate as in pictures below. A welder with internal feed assembly is commonly known as a compact MIG welder. The large spool of wire should be held on with a tension nut. The nut should be tight enough to keep the spool from unraveling so to avoids over-run (birds nesting) when trigger released, but not so tight that the rollers can’t pull the wire from the spool. If you follow the wire from the spool you can see that it goes into a set o
