We used a Hobart Handler 187 MIG-welder to install our cage. The welder is capable of up to 5/16-inch steel. This 220-volt machine is a great entry-to-midlevel machine in a small package. We used 75/25 welding gas and 0.035 wire. In addition we had two of Hobart's auto-darkening welding helmets on duty so that the welder and anyone helping him mock up tubes could be shielded from the pretty blue light.