My 110 volt MIG welder is used mostly for bodywork, so I wanted it easy to move around. Having a place to keep some tools/bodywork supplies was also helpful. The cart is built from light angle, 1-1/2 x 1-1/2 x 1/8 with a base cut from 1/2" plate. That keeps enough weight down low to make the cart fairly stable. On one end is a holder for the CO2 bottle (I use .023 hardwire 99% of the time) with a small ratchet tie down strap to keep it secure. As well as being a convenient handle, the hoop around the flowmeter protects it from any "oops" The white toolbox is for extra contact tips, nozzles etc and there is a shelf behind it. Lower shelf I usually keep often-used power tools on, and a small fire extinguisher is attached to one of the cart's legs. On the far side are two hooks to stow the lead/ground/power wires.