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How does the Millermatic® 251 stack up to the competition? | 
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| Comparisons | New Millermatic® 251 | Lincoln Power MIG 255 | Esab Migmaster 250 |
| Rating | 200 A at 28 V, 60% 250 A at 28 V, 40% Tested at 104 °F (40°C) |
200 A at 28 V, 60% 250 A at 26 V, 40% |
250 A at 27 V, 50% 225 A at 29 V, 60% |
| MIG Welding Thickness Capabilities | 22 gauge up to 1/2 inch in a single pass. | 22 gauge up to 5/16 inch in a single pass. | 24 gauge up to 1/4+ inch in a single pass. |
| Patented, Non-Linear Wire Feed Speed | Yes - wider "sweet spot" on low end makes it even easier to set | No | No |
| Patent-pending Active Arc Stabilzer™ | Yes - provides superior starts and an excellent arc throughout the range. | No | No |
| Arc Starts | Excellent! Statistically measured the most consistant starts in this class. | Good | Average |
| Out-of-Position Welding Performance | Exceptional | Fair, mushy arc causes frequent arc outages. | Poor |
| Adjustable Run-In | Easy to adjust for both the MIG and spool gun, precise setting for the operator. | Only high or low run-in selection. | No |
| Gun-On-Demand™ | Yes - easily change from MIG to spool gun by simply pulling either trigger. | No. Switch in wire compartment must be toggled every time you change guns. | No |
| Aluminum Welding Performance | Exceptional | Arc flares at start, inconsistent wire feed from spool gun. | Info. not available |
| Spool Gun Connection for Aluminum Welding | Yes - direct connection supplied for Spoolmatic 30A. | No - module purchase and installation required. | No - module purchase and installation required. |
| Meters | Yes - presettable, 5 sec. hold on settings and Help message. Also displays spool gun settings. | Yes - presettable and 5 sec. hold. WFS meter does not work when spool gun is used. | No |
| Consumable Compartment | Yes - easy to access and removable. | Non-removable compartment, difficult to access small consumables. | No |
| Fan-on-Demand™ | Yes - fan runs only when needed. Reduces dust and dirt in machine. | Fan-as-needed - fan runs approx. 6 min. every time you pull the trigger. | Thermostat-controlled - fan runs when unit is turned on. |
| Built-in Dual Gun and Cable Holder | Yes | No | No |
| Reversible Dual-Grooved Drive Rolls | Yes | No | Yes |
| Tool-Less Quick Change Drive Rolls | Yes | No, must be pried off. | No |
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* Specifications for competitive equipment taken from manufacturer's product literature and/or product labels.