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[G-ManBart]

Ground? Ohhhhh....you're all talking about the work clamp.

[G-ManBart]

I replied earlier and it got flagged as potential spam....weird. This is what I wrote.

A MM210 will handle 1/4" mild steel, and the parameters chart shows up to 3/8" with solid .035" wire and 75/25 gas, so you'll have enough power. We have a 212 at work (similar specs to...

[G-ManBart]

What model welder?

[G-ManBart]

A MM210 will handle 1/4" mild steel, and the parameters chart shows up to 3/8" with solid .035" wire and 75/25 gas, so you'll have enough power. We have a 212 at work (similar specs to a 210) and I've welded enough 1/4" with it to know it worked nicely. The problem could be duty...

[G-ManBart]

Which 210 are you asking about? Millermatic, Syncrowave, Dynasty....etc.

[G-ManBart]

Go to Miller's site and look up the manual for your machine using the serial number. Find the parts you need, write those down, and then plug them in at Miller4less or millerserviceparts websites and you should have everything you need at the best price. One of those two places is usually the best...

[G-ManBart]

Maybe I'm reading it wrong, but Auto-Set doesn't control your gas flow....you set that at the regulator on the tank. What sort of gas flow rate are you using? Something in the 20-30CFH is probably where you want to be.

Early on I had oddball porosity show up a few times only to find...

[G-ManBart]

Years ago I saw manufactured homes being set on crawl spaces with I beams spanning the crawl space. Many of the beams had been extended and the guys called them "scabbed" beams. The short version is they put two pieces of beam butted against one another and then welded a flat plate that...

[G-ManBart]

I'm far from an expert, but I've had excellent luck with the Midwest Tungsten Service 2% Lanthanated tungstens I bought off eBay...have them in several sizes and have had zero issues. I've used other names like CK and didn't notice any difference.

https://www.ebay.com/str/midwesttungs...

[G-ManBart]

I found the leftover MOVs that I used on my MM251. It's hard to read, but the top line says "H S2" and the bottom line says "275L10".

I'm not sure if it's the same part for a 250X, but I wouldn't be surprised. I got this MOV part because I happened to have two MM251s...

[G-ManBart]

Thanks for correcting my error. I said thermistor when I meant varistor. I had a machine that I replaced one of each on and was confused. I think I have a couple of the varistor's left from a MM251...likely the same part. I'm going to check and post back....

[G-ManBart]

You're asking about a Millermatic 250X correct? The clear part is CR1 and the blue disk is a varistor. The varistor is shorted which bypasses the relay and causes the fan to run all the time. That's often a sign of a welder that either was subjected to a voltage spike from a lighting strike, or it was...