Good Wholesale Vendors Alloy Steel for Curacao Factories

Disclaimer: This is my first time trying to mig weld. I am an FAA licensed mechanic so we had to know how to weld the old aircraft’s airframes composed of chrome molly 4130 tubing 4/3 and 1 inch ID. We had to measure out the pattern for cutting the cluster (four tubes) joined together tightly and then Oxy Acetylene weld the cluster, then the inspector would place your test joint in a big vise and pound it with a heavy hammer to see where the joint breaks, it should not have broken in the weld area:
I sold this machine, so was doing some testing for the feller who was purchasing it.
This is a 120 volt machine and is not rated for up to 1/4 steel in one pass. If you need to weld that thick, first V out the 1/4 plate. Here I am trying to weld 1/4 in thick plate steel using .030 mild steel wire and 22 CFH 75% argon 25 % Co2 gas mix. You have to stay close to the metal and keep a steady speed. I am using the hottest ‘E’ setting and 5 FPS wire feed. This is not recommended, it is something I just tried.
I beveled both sides of the 1/4 inch plate and wire brushed the metal first. I am using a 12 AWG extension cord on a 20 amp breaker and welding this hot does trip the breaker, a lower setting is alright on a 20 amp.However the machine does not cut out like some others may do.