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Looking at the pix of the damaged chair, along with the one I posted scavenged from an ebay listing, looks as if he would need the whole chrome apparatus that the footrest and arms are bolted onto ?...

Friend of mine has a tig welder and he has welded cast tattoo machine frames for me. These were sand castings that I was customizing. Welded up just fine. IIRC, though I've not done it personally...

For posterity ;
170776

Another possible avenue, is the guy who runs the annual Barber Collectibles Meetup in Ohio. Go to this website and maybe email the guy who runs it. His addy is at the bottom of the page. If he can't...