Is it safe to weld steel bicycle frames with only a 110v welder like the Fronius Artis 210 (Previously Fronius TransTig 210)?
I’m using a 120/220 welder on a 120V 20A circuit and that’s been plenty for my practice. It hasn’t been a problem using it up to 80A or so. The rule of thumb is one amp per thou. I do plan to switch to a 220 circuit at some point.
My welder is a AHP AlphaTig 201. Sorry, I don’t know the one you are considering.
I haven’t TIG welded a frame yet, I’m just learning. The few frames that I’ve built have all been brazed.
I picked up a multi-processor unit that runs on 110 and 220v. From my few attempts, you should be fine with 110v to weld typical bike frame materials. My unit doesn’t have provisions for a pedal to control the start/stop. it uses ‘lift to start’. This is not good for making bike frames or any fine TIG work. I bought it for MIG which it does very well but would have liked to learn TIG.
You should be fine. Mine is 220V because I’m in UK, but bicycle tubing is thin, and you’re never going much above about 50A. I set mine to 80A and use the pedal, but never go full gas.
The accessories I strongly recommend for bicycle frame building are: a foot-pedal (this is basically a must), one of those super-flexy CK hoses with a No 9 torch, and a Furick Jazzy 10 cup.
I have been welding bikes and other stuff with a Lincoln invertec on 110v for the past 20 years. Zero problems.