Millermatic 252

What owners do with it

How it is used28 owners said

Paid work50%
Farm and repair36%
Hobby and home11%
Auto and fab4%

Process used10 owners said

MIG with gas70%
Flux core30%

Specs

What it does

Processes
MIG, Flux-core
Plugs into
240V
Amperage
30-300A
Duty cycle
200A at 60%

The machine

Weight
205 lb
Warranty
3 years 3 years parts and labor; MIG gun 90 days.

Prices

Atlas Welds$4,729In stockCyberweld$4,729In stock

34 owner reviews

ChevyConQuesoDec 11, 2025 Mixed

Got my 252 a year later in '13. I still run a 251 at work as well. The adjustment knobs are stupid sensitive on the 251 but it feels the same while welding. I still have the M-25 gun for light work and a .045 ATTC Lightning gun for running FCAW-G. I use the ATTC Lightning consumables, but figured out I don't like the screw on nozzles much in that brand. Bernard Centerfire stuff is alright but they are more limited on options for nozzles, and the larger series is damn chunky. I've got both Centerfire size adapters in my stock drawer if I ever want to switch it up. I can't say I've ever tried running a .045" tip with .035" solid wire. That could definitely be an issue with consumables that don't have much contact surface area in the tip for the wire to touch (looking disapprovingly at you Tweco Fusion).

AirheadNutAug 30, 2025 Mixed

I'm also entirely self taught, but have been welding for a living for a couple of years now (all mig). In my experience the only time more than a fraction of a second of pre- or post-flow is necessary is when welding aluminum or stainless steel. If your workpiece is dirty enough that catching it on fire is an issue you should really be cleaning it prior to welding, simply running more gas won't help nearly as much as a moderately clean substrate. Make sure your regulator is set high enough too, usually 25-35cfh is plenty for lighter stuff on mild steel. On many newer machines it is possible to set pre flow and post flow, pre flow isn't necessary on mild steel but a little bit of post flow doesn't hurt, just long enough to keep the puddle in the shielding gas until it isn't glowing any more. I have an older style Millermatic 211 that doesn't have that option, but have never found it to be an issue. At work I use a Millermatic 252, 215 and 255, all of which can do pre and post flow.

ricktolucero2826Mar 23, 2025 Positive

I bought mine around 2012 to I built water truck, pup, trailers, and tanks be good to watch a video on that cause I’m not sure. I really know everything about it, but I got by. Use the 250s for a long time never had any problem with Wells breaking on oil field equipment not a professional that’s for sure but I got by.

practicalman45Mar 10, 2025 Positive

I'm a professional welder fabricator, self employed for almost 40 years. Retired now, mostly, but still have my shop and tools. I have 5 other arc welding machines. All bigger and more expensive than this one. My engine driven portable stick welder/generator set is (40 years of use, also) is about wore out and neglected, needing work and out of service. I got this little Titanium to fill in when out of reach of my shop and all of the heavy, 240 volts, transformer powered dinosaurs that live there. This one, being my first inverter powered machine, is about the weight and size of a school lunch box. From the good reviews, I took a chance on it. At my shop I still prefer my Millermatic 252 MIG Welder (but with it's 50lb. CO2 bottle it is over 300 lbs.!). So the Titanium Flux 125 plugs into a 120volt cord and needs no gas bottle! The gun lead is only about 5 feet, so you have to put the machine on the table right next to your work. The ground lead is just as short and the clamp is like a cheap car jumper cable (so make a shiny spot to clamp it to). Surprised me how strong it is! It says you should have a 12 gauge cord on a 20 amp circuit and that is no lie. I tried it on my 4000 watt gas generator and it is kinda wimpy for this welder, nearly stalling the engine when you pull the trigger. It could work for some light tacks, but you really need a solid cord and household circuit. With a little practice I was laying a 3" long fillet weld in flat position in the corner between 2 pieces of 1/4" plate that looked like it was welded with a 1/8" 7018 stick electrode rod. Never had the settings over about 1/2 way up! It really surprised me. I know it'd break quick if you just pushed it and didn't let up, but if you use it hard briefly and let it rest in between it should be able to do quite a bit. It is very capable for what it costs! I know I could baby it and get a lot of work out of it if I wasn't in a hurry. After it heated up a little it was harder on my generator than when it started out cold. If you're using a generator? Better have a stronger one than mine.

FredWinegardnerFeb 19, 2025 Mixed

I’ve ran these since they first came out. The biggest problem I’ve had with them is the thermal shutdown. If you try to use Dual shield wire or Outershield, it will get hot and shut down if you do not improve the ground clamp and ground lead. I have a 251 digital that will run all day long with anything I use it on. In my opinion the transformers that came in the older machines are quite a bit better.

tylersnider1846Nov 10, 2024 Positive

User error... the clamp is a little cheesy, but it getting bent like that is probably due to a bad ground and the clamp arcing and getting hot. Popping 15amp breakers... no kidding. It clearly states it was designed for a 20amp feed. The 15amp adapter is just to get you by. Lastly, wearing out liners? How are you wearing them out so fast? Sure flux core is dirty, but not on the outside of the wire, you know the portion rubbing on the liner... Ive been packing around my Forney for about 5 years now, and its been flawless. Was better than the lincoln it replaced, at half the amount of money. Sure, it doesnt compete with my Miller 252, but its not supposed to. Its a great little machine. In the right hands of course.

tnt421Aug 14, 2024 Positive

I use the exact same machine at work. I run .035 solid steel wire with 90/10. The only issue I've ever had was the rollers getting gummed up with the green goo that comes off ESAB wire. I run a tweco gun with a 23-37 nozzle for getting into tight spots. SCREW-ON nozzle is a must.

TehButterflyEffectJun 17, 2024 Positive

My machine at home is the older version with a tap switch instead of the digital voltage. Separate wire feeder. I plan on modding the wire feeder to add pre and post flow so it will run more like a 252. It uses the same transformer as a 252. Welds great with a Bernard gun.

TehButterflyEffectJun 17, 2024 Mixed

I have one at work. It died recently, I think. I haven't had time to diagnose it yet.

joshuaperry5734Jun 12, 2024 Positive

I have 2 of them I use full time. Very great machine. Mine are wired 480volt

TheCC89Apr 8, 2024 Mixed

Actually, that is the most important question for any welding machine. The 252 is 60%, that's why I went with a Panasonic @ 80%. Side by side, the Miller guy was taking breaks every 10 mins where I was running beads all day. Miller 252 is still a good machine. There are things I like and dislike about both. We would run .045 wire at 25 amps in the Gunslinger and basically plasma cut 1/4" plate. Lol

PrestonweldingApr 3, 2024 Mixed

I always run a larger tip than my wire as well. Seems to run smoother and the tips, for me, last longer.

Review videos

Stacey David's GearZ Miller MIG WeldersApr 18, 2011 · YouTube ↗Millermatic 255 vs Multimatic 255 Review and ComparisonDec 6, 2023 · YouTube ↗About My Millermatic 252 Mig Welder #welding #shop #farm #weldingmachine #arossweldingMar 31, 2024 · YouTube ↗Millermatic 252 MIG Welder 208/230 Volt Set UpJan 26, 2024 · YouTube ↗Machine Minutes - Millermatic 252Jan 28, 2025 · YouTube ↗Millermatic 252Aug 16, 2024 · YouTube ↗

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