u/Pristine-Rooster5618

I work on cars as a hobby and was interested in building my own exhaust / intercooler piping and maybe getting into roll cages / bash bars and tube framing depending on my comfort levels.

I've been searching around for pipe benders or rollers that support 3.5-4.0" OD but can't seem to find any. Wisdom would tell me that most of the time it's just cut and welded, but then again, I see products from companies with bends in large pipes and I'm wondering how they do it; like if it's just a super expensive and specialized machine that I'd never have any chance to afford or if it's just some method I'm not aware of.

Thanks for any help!