Steve Thomas wrote:
Has anyone on this list ever welded a thinwall 4130 frame with a MIG welder?

What is a good source of 4130 seamless and welded seam tubing?

Thanks,


I use a Lincoln Weldpak 100 to tack everything together, but the MIG has
a tendency to either not penetrate or blow holes. Very hard to
balance on the line. I just tried TIG, after putting nearly the whole
frame together with oxy/acetylene. I'll stick with the oxy/acetylene,
because the TIG gave me the same results that I got with MIG. Either
not penetrating or blowing holes.

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