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One thing is if the welder is equipped with PFC. power factor correction. Basically a couple capacitors that compensate for the inrush current that takes place when you strike the arc or get a little too close as you are welding. In the old days (60s) power companies would charge extra if you...

Lots of good used a/c, d/c machines out there with power factor correction and other factory designed filters that are very smooth. I still have my Lincoln TIG/Stick A/C, D/C 300 amp 1982 I bought new.

Don’t forget the duty cycle of your welder rating.

Like someone else said welders are inductive load and generators are typically rated at resistive load. That’s where power factor comes into play.

I have two old Lincoln pieces I bought new. 300/300 stick/tig and an Ln25. Both are working fine. I did 350’ of bead this year with them. I also replaced the blue in the picture with an Esab.

Ignition coil, wiring.

I started doing cylinders in the late 60s, I break the gland nut loose while they are on the machine. I wrap the rod with a split plastic sleeve in case I have to do any hammering, or anything slips. The rod end nut I use big impact wrench.