The job is to weld containers made of 2.5mm steel. I cant work out which ty pe of welder would be best to choose. Gasless wire is real easy to use comp ared to arc, but IIRC the wire isnt especially cheap, and a bead along all the edges plus more is going to eat a lot of wire. Given the limited time w indows in which the jobs will be done, I suspect gasless wire is the way to go, unless someone knows better. I've not welded in ages, but have used ar c, oxy and gasless wire.
NT