Re: Flux-core/MIG for frame welding?
If you use a wire wheel and grinder wheel you can get by with flux core mig. Clean and prep suface. Make sure to atleast wire brush weld each time you stop and continue or cap a weld. I invested in a TIG but used a mig fluxcore for years and never had a problem. Be safe, practice. Use a good welding hemet so you don't get flashed. Good Luck!