It's very much like firing a gun. Only difference is that you're making things, and not destroying them with supersonic bits of lead and copper.
The feed mechanism is very much like a filament extruder.
I'll be using flux-core wire until I can get a gas setup going. The go-to flux core wire that most people tend to use is the Lincoln Electric NR-211-MP. Again, very reminiscent of a spool plastic filament.
Also brushing up on Solidworks, digging deeper into the Weldments and FEA simulations.
I've got a few fun projects lined up to test what this welder can do, so stay tuned!