Building the Canadian Semi-Auto STEN

[Claven2]

"Now crank up the amps on your MIG welder and give her a good deep plug welding"....
Cost being no object TIG might well be the preferred system.
MIG equipment is somewhat less expensive. I don't think Claven is using a Linclon Electric welder

Actually, for this latest build, I'm using a 120v Lincoln Electric SP135. I think they discontinued that model last year, but some places still have it in stock. Mine is set up for both flux cored and gas, though in the pics where the weld is spattered in brown residue, I am using flux-cored wire because gas is expensive and I have lots of flux-cored wire lying about, so I only use gas when there is a real benefit to doing so

TIG is the way to go if you can justify the expense and take the time to learn how to properly use it. For home shops, it doesn't often make much sense though...