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Miller Multimatic 200: Tools of the Trade

Powerful and Portable Welding Prowess

Feb 14, 2017
Photographers: Jason Gonderman, Monica Gonderman
The process of welding, in its elementary form, has remained unchanged for more than a century. By contrast, the machines that enable us to fuse metal to metal with an electrical current have advanced by leaps and bounds in recent years. Most notable, perhaps, is the advent of inverter-based welding technology. This technology has allowed machines to become smaller, lighter, more efficient, more powerful, and, most importantly, portable.
Miller has been leading the charge in welding innovation with the introduction of its intelligent Auto-Set and Auto-Set Elite feature; Multi-Voltage Plug (MVP), which makes switching between 120 and 230 volts simple and tool-free; and innovative, multifunction machines that combine the ability to run MIG (GMAW), TIG (GTAW), and stick (SMAW) within a single machine. Currently, Miller has two units in the market that fit into this category: the Multimatic 200 and 215. Miller’s Multimatic 215 is the newest to the lineup and boasts an incredible feature set. However, more interesting to us, is its predecessor, the Multimatic 200.
Photo 2/17   |   In the box, you’ll find everything needed to get welding—except for consumables. Assembly is straightforward and requires no tools.
The Multimatic 200 predates the 215 by a couple of years and is unlike anything seen before from Miller. This multiprocess powerhouse is capable of stick, TIG, and MIG welding. The Multimatic 200’s MIG welding capabilities are as diverse as they come, as it’s capable of welding steel, stainless steel, and aluminum (through the use of a spool gun), along with running solid steel wire on C25 or C100 shielding gas, or going gasless with flux-core. The machine is set up with two gas ports: one for the argon required for TIG welding (or tri-mix to run stainless), and one for the MIG process, making swapping shielding gas a nonissue. Switching between the three processes is simple as well, with the negative and positive power leads located conveniently on the front of the machine, which attach with a simple push and twist. A dial on the 200’s face lets the user quickly set the desired function, and the LCD display helps guide the setup.
Beyond its impressive capabilities, what sets the Multimatic 200 apart is its portability. The Multimatic 200 is housed in a durable, impact-resistant, plastic case, making it ideal to toss in the truck bed and haul out to any jobsite. The base unit, without any cable leads or MIG wire, weighs a paltry 29 pounds. Set up for MIG, with a 2-pound wire spool (the machine can hold a full 10-pound spool as well), the entire rig checks in at less than 40 pounds. While the welder is designed to travel wherever it’s needed, you’ll still need to take care to not abuse it or damage the face. The plastic case is sturdy, but it won’t protect against falls, and the internal electronics are still sensitive.
Photo 3/17   |   Inside the machine are the guts of the MIG setup. This is where the wire spool is housed and the MIG gun gets connected. There is also a storage spot for the unused Multi-Voltage Plug and connection ports for both MIG and TIG control.
Photo 4/17   |   Miller Multimatic 200 Tool Guts
After a quick set up, we spent some time testing out all the different functions of the welder. We grabbed some dirty scrap metal, our trusty welding table, and set to work laying beads. And since we were testing the machine’s abilities and not our own, we ran each process with the Auto-Set Elite dialed in. Having not run a stick (SMAW) bead in more than a decade, we were a touch apprehensive when it came to this process. Fortunately, with the help of Auto-Set, it was just like riding a bike. The Multimatic 200 provided a clean, stable arc that was very easy to control. With 7018 rod on nasty 1/8-inch steel, the machine made us feel like old pros. A lot of people think stick welding is old, dirty, and only for pipefitters and structural welders. In reality, it’s a great choice for making repairs in places where carrying welding gas would be difficult and looks don’t matter, such as repairing a ranch fence.
Next up was MIG (GMAW). We chose to run .030-inch-diameter solid steel wire for our testing on C25 (75 percent argon, 25 percent CO2) gas, a very typical setup. While the included Bernard gun felt a bit large in our hands, all was quickly forgotten as the machine laid down a nearly effortless bead. We were quite impressed with the quality and composure with which the Multimatic 200 “stacked dimes.” With 200 amps of power on tap and the ability to weld up to 3/8-inch material, there are not many situations in which an average user would be left wanting more out of the 200’s MIG ability.
Photo 5/17   |   On the rear of the machine is where we find the main power switch, along with gas ports for both MIG and TIG gases. Having two ports allows for easy transitions between processes without the need to change bottles and regulators.
Lastly, we set the machine up to run TIG (GTAW) using the available TIG Contractor Kit. Included with the kit is a Weldcraft A150 torch, foot control, gas regulator, and an accessory kit with additional cups and tungsten. It’s worth noting that the Multimatic 200 is DC only and does not have the capability to TIG weld aluminum on the needed AC current. The 200 also lacks a high-frequency start, which means users will need to use the lift-arc method to establish an arc. If you’re new to TIG, this can be a bit tricky to master. However, once running, just like the other two processes, the 200 runs flawlessly in TIG mode. Our only complaint, if you can even call it that, is that there is no post-flow adjustment and, as delivered, the post-flow is a bit long for our personal preference.
Overall, the Miller Multimatic 200 is a true jack-of-all-trades, and master of all of them. It packs more than enough power to get most jobs done, and its ability to be safely taken out of the shop and into the field sweetens the package even further. If you’re looking for the ability to run MIG, TIG, and stick, and don’t want a shop full of machines, then look no further.

Specifications

Model: Multimatic 200
Input Voltage: 120/230
Rated Output:
120V MIG (GMAW): 110 Amps at 19.5 Volts DC, 20 Percent Duty Cycle
75 Amps at 17.75 Volts DC, 100 Percent Duty Cycle
230V MIG (GMAW): 150 Amps at 21.5 Volts DC, 20 Percent Duty Cycle
120 Amps at 20 Volts DC, 100 Percent Duty Cycle
120V TIG (GTAW): 150 Amps at 16 Volts DC, 30 Percent Duty Cycle
70 Amps at 13 Volts DC, 100 Percent Duty Cycle
230V TIG (GTAW): 150 Amps at 16 Volts DC, 30 Percent Duty Cycle
100 Amps at 14 Volts DC, 100 Percent Duty Cycle
120V Stick (SMAW): 100 Amps at 24 Volts DC, 35 Percent Duty Cycle
70 Amps at 22.8 Volts DC, 100 Percent Duty Cycle
230V Stick (SMAW): 150 Amps at 26 Volts DC, 30 Percent Duty Cycle
100 Amps at 24 Volts DC, 100 Percent Duty Cycle
Dimensions (inches): 14.50H x 9.75W x 17.00L
Weight (machine only): 29 pounds
MSRP (with TIG kit): $2,379
Photo 6/17   |   Speaking of regulators, one is included with the welder and another with the TIG kit, ensuring there’s no need to source a separate gas regulator.
Photo 7/17   |   On the front of the machine is where we find controls for the Auto-Set Elite along with a knob to select the welding process. This is also where the positive and negative electrodes attach, allowing for quick changes between processes without tools—and without having to open the machine.
Photo 8/17   |   Miller Multimatic 200 Tool Electrodes
Photo 9/17   |   Inside the door is a handy cheat sheet intended to aid in choosing the correct polarity for each process and material type, along with popular base settings for different material types and thicknesses. But if you’re checking the chart, just turn on the Auto-Set.
Photo 10/17   |   Altogether, the Multimatic 200 packs up into a compact sub-40-pound package that is easily transportable.
Photo 11/17   |   Stick (SMAW) welding with 3/32 7018 rod.
Photo 12/17   |   Miller Multimatic 200 Tool SMAW
Photo 13/17   |   MIG (GMAW) welding with .030 solid steel wire with C25 shielding gas.
Photo 14/17   |   Miller Multimatic 200 Tool MIG
Photo 15/17   |   TIG (GTAW) welding with 3/32 tungston, 1/8-inch filler, and argon shielding gas.
Photo 16/17   |   Miller Multimatic 200 Tool TIG
Photo 17/17   |   Never fear! If you make a simple mistake when setting up the Multimatic 200, it will let you know and oftentimes suggest how to correct the error as well.

Sources

Miller Electric
Appleton, WI 54912
920-734-9821
www.millerwelds.com

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