Snap On MW120 MIG Welder
There is no way no how a 120 volt MIG welder will make a proper weld using .045 solid wire.
In fact .035 wire is way to much for a 120 volt MIG welder
Trying to use that larger diameter wire in those machines will result in a "cold" weld that has no penetration
People look a the bead, think it looks good (it doesn't) and think they made a sound weld.
Just wanted to back up your posts and the only reason I replied