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  • Millermatic 140 Auto-Set (Machine)
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Millermatic 140 Auto-Set (Machine)

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List Price: $879.00
Price: $860.00 & FREE Shipping
You Save: $19.00 (2%)
In stock.
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  • New! Auto-Set is a breakthrough control that automatically sets your welder to the proper parameters.
  • NEW! Smooth-Start patent-pending technology provides a smooth, spatter-free start.
  • "Tip Saver" short circuit protection shuts down output when tip is shorted to the work.
  • Standard Built-in solid-state contactor circuit makes wire electrically "cold" until trigger is pulled.
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5 new from $721.83 1 used from $900.00

Frequently Bought Together

Millermatic 140 Auto-Set (Machine) + Hot Max WC100 Welding/Plasma Cutter Cart + Hobart 770150 MIG Multi-Function Welding Pliers
Price for all three: $965.34

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Product Information

Technical Details
Part Number 907335
Item Weight1 pounds
Item model number907335
Power Sourcecorded-electric
Item Package Quantity1
  
Additional Information
ASINB001VXWHKG
Best Sellers Rank #238,051 in Home Improvement (See top 100)
Shipping Weight61 pounds (View shipping rates and policies)
Date First AvailableNovember 9, 2004
  
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Product Description

MIG Welder, Millermatic, Input Voltage 115, Input 20 Amps, Output Range 30-140 Amps, OCV 28, 60 Hz, Duty Cycle 20%, 1 Phase, Rated Output 90 A at 18 VDC, Wire Size Mild 0.024 - 0.030 / Flux 0.030 - 0.035 In., Overall Height 17-1/2 In., Overall Width 10-5/8 In., Overall Depth 15-3/4 In., CSA Certified, Includes Power Source, Power Cord And Plug, Gun And Cable Assembly, Work Cable And Clamp, Gauge With Hose, Spool Of Wire, 2 Contact Tips, Drive Roll, Valve, Set-up Cd, Info Chart, Thickness Gauge 140 Auto-SetMillermatic Welds 24 ga. up to 3/16" mild steel. Wire sizes: 0.024" to 0.030" mild, 0.030" to 0.035" flux.Auto-Set feature allows quick and easy setup. Spatter-free start with tip saver and trigger reset. Include regulator, 10-ft. MIG gun, and hose cart.Light Industrial MIG Welders

Customer Questions & Answers

Customer Reviews

4.9 out of 5 stars
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See all 11 customer reviews
Fantastic welder as millers are known for.
saroeun toum
I haven't really had an opportunity to run the Auto-Set as much as I'd like to comment on it.
M. Gray
This machine is very user friendly and simple enough for the beginner or at home hobbyist.
SouthFLDonny

Most Helpful Customer Reviews

56 of 58 people found the following review helpful By M. Gray on April 25, 2010
After years of having to drag any of my welding needs to work, I finally plunked down and bought this unit 2 yrs ago. I'm a fan of Miller products from way back, having cut my welding teeth on a Syncrowave 250 multiprocess machine, and using all Miller products at work from light gauge galv. steel MIG welding (Shopmaster 300 from the 80's, 2 yr old ShopMate 300DX), to running straight SMAW stick welding with a couple of DialArc 250s that range to the late 60's, early 70's. And in my shop environment these things get beat to hell, and little if any repair work has been needed. Miller machines seem to last forever.

That said, this little 120 volt MIG welder has some serious guts to it. It's more than light enough to travel with, and being 120V it can be used almost anywhere. I regularly run it on a 15amp circuit with no problems.

The 20% duty cycle is overly cautious - this machine doesn't quit. Doesn't cut off, either, just keeps going. Welded the doors shut on a demo derby vehicle - nonstop welds. It's insane.

The M-10 gun is smaller but is perfect with this machine. I would probably replace the ground clamp with something a little heavier duty, but thus far it's been fine for my usage. The wire feed motor is a bit on the louder side, but has no problem pushing 0.030" wire at full speed off of a ten lb spool. Spool changes are quick, which is a good thing, I seem to alternate back and forth between 0.023" and 0.030 all the time.

I haven't really had an opportunity to run the Auto-Set as much as I'd like to comment on it. It seems to work well, but I rarely use this machine to weld equal thickness steels. Example - welding 3/16 wall tubing to auto body sheetmetal to replace rocker panels on an off road Jeep.

If you need to do any kind of welding at home, this machine is excellent. And you can get replacement parts (tips, nozzles) at just about any weld supply shop.
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46 of 49 people found the following review helpful By Philscbx on January 6, 2009
I have had my Millermatic 140 unit for a little over a year now, and it gets used more than my much larger Miller 250 220 volt. I can weld as small as I want to 1/2".
It's rated for 3/16's.
But if you know what your doing, 1/2" is no big deal.
This guy can plow along like the baddest units out there.

You also need to go to welder supply to get bottled gas mix for it.
Not cheap, but there's no way around it unless your going with flux core.
Then you also need the electronic mask.
Grinders, clamps, safety equipment, safe storage high on a solid cart.

I always forget to make a video for items here.
So next project with this guy gets a video of 1/2" steel for those that have no clue.
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14 of 15 people found the following review helpful By Richard on May 16, 2012
Verified Purchase
Purchased this welder to help with building a demo derby car. Welder showed up on my door step about 1 week after ordering.
After everything is said and done, it totaled about $1,200 for the welder, a bottle of argon from a local supplier, safety gear(gloves and a helmet), extra wire, and a welding cart.
The welder works perfectly. I have had trouble with it tripping the 15 amp breaker when cranked all the way up. If you are welding heavy, make certain you have a 20 amp breaker available.
Overall, its a Miller and hard to beat. The only bad part was the local supplier harassed me for not buying the welder from him.
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26 of 32 people found the following review helpful By S. Traci on October 29, 2011
I bought a Chicago Electric MIG welder and then this MIllermatic. Using them both side by side was a lesson in why you spend the good money on a great tool vs. a cheap one. The Chicago Electric (Harbor Freight) has two settings, Min and Max. But even at the Min setting I was blowing through 22 and 24 gauge sheet all the time. The feed control was fine, but at the higher setting it wasn't fast enough to create a bead. The splatter was terrible, leading to burst and sloppy welds. It was like trying to weld with two blunt ends of an extension cord.

The Millermatic is a dream. Controls for various thicknesses of material. Feed controls that keep up with whatever setting you need. Right out of the box I put a bead down between to pieces of 14 gauge tube. It was beautiful. Welded 24 gauge sheet with no burn through, not even a dimple.

Used flux core and gas/steel with both welders 0.030

Bottom line is you get what you pay for.
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5 of 6 people found the following review helpful By SouthFLDonny on April 2, 2013
I have owned both the "grey" and "red" comparable machines, and they honestly don't belong in the same league. This machine is very user friendly and simple enough for the beginner or at home hobbyist. I paired it with a small Miller Spoolmate for light aluminum work in the field. It will run off my old Trailblazer 251NT without any issues. Get yourself some 3/16" UV resistant tubing and some oxy/acetylene quick disconnect couplings to ease in switching between different shielding gases.
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2 of 2 people found the following review helpful By Bruce C. Fox on June 12, 2014
Verified Purchase
Great machine, back to welding thin metal, quite versatile for a 115v machine.
The auto feature for wire speed is very handy.
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