Youtube hearted comments of Comm0ut (@Comm0ut).

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  12. Many Dialarcs (and Lincoln Idealarcs) remain in commercial/industrial use. Most reasons for going inverter involve mobility not cost. BTW Dialarc, Idealarc and even monsters like my 340 AB/P will run off a 50A source but not maxed out. The old machines cost less used than a replacement inverter board. Used machines are cheap enough to have both. Also worth noting if you already have a stout RPC (rotary phase converter) they will run transformer machines. (Shop Floor Talk fora have some useful threads). I have an RPC to run three phase machine tools and air compressors. In your manual (Miller and Lincoln have them for free download so get one for everything) info on breaker size etc for various three phase connections shows why that's worth considering. When I built my shop I had a new service placed on a pole with a breaker panel so powering large machinery is NBD (and getting power before shop makes building the shop much easier and more convenient). If you want to run big rods or weld aluminum at high amps appropriate transformer machines are worth having. My old Miller will output 500 amps and the arc is delightful. It was 250 bucks because the seller saw a "three phase" sticker on a box mounted to it. I knew I could run it single phase because I download manuals BEFORE buying. It's the size of a fridge and weighs about 1300 lbs but those downsides only matter when moving it. Tip: A Tommy Gate can be "assisted" by a couple of ag jacks when (not grossly) overloaded for the popoff valve. It's easy to accumulate used industrial welders with some looking. I have lighter machines too because covering all bases pays off.
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