Not a framebuilder, but having had the experience of fitting parts to ill-prepared metal frames for so many years - I don't think you'll get buildable frames out of this method.

I would be more inclined to buy some enormous and cheap old hi-ten steel frames and either dissemble the lugs with torch or just cut and grind everything smooth for fillet brazing. Oxy acetylene and brass filler should be reasonably cheap.

You will likely burn through some tubes and warp others, but you'll be working with bike dimensioned lugs and at least have a shot of making a working bike. Hi-ten is not super thick, but is thicker than chromoly, so that will help. I realize there are lots of flaws with that suggestion, but I feel like you might learn more about bike construction.


Otherwise, use that stick welder to make other things besides bikes until you are very good, then jump back into bikes and TIG.