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WillieB
Senior Member
Joined: 12-05-2013
Location: At the epicenter of the Green Mountain Range in VT
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  • WillieB
    replied to Tungsten type
    I don't care. I won't use green (pure). Pure is intender for sine wave welders that send a great deal more heat back to the tungsten. Alloyed tungsten tends to split, fragment, and deform with sine wave machines. Pure will form a stable mushy ball & maintain its shape.

    Square wave welders...
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  • Mine is here someplace. Hasn't been used in years. In the old days I made Maple syrup. I built a carryall for 3 point hitch. Mine was of 3" x 1/4" angle. A simple frame for three point hitch, the pins for lower arms were at height for it to sit on the ground when the hitch was lowered. Top...
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  • WillieB
    replied to I HATE my welder, MM 252
    No arcing, just friction marks where the welder end adapter tip has touched the rollers at some time.

    In this machine the roller & gun gripping assembly is connected to a power conductor from the welder bowels. current should flow from the adapter, through cable surrounding the liner,...
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  • WillieB
    replied to I HATE my welder, MM 252
    In this gun the liner doesn't come into play. There is a cap, or nozzle on the end of the adapter that approaches the rollers. Doesn't seem to be an adjustment, only tapered thread in two places where I might alter torque to very slightly change length. The outside of the "nipple" shaped end...
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  • WillieB
    replied to I HATE my welder, MM 252
    I've loosened it up to spin freely, nearly no friction, only enough to avoid wire coming off....
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  • WillieB
    replied to Upgraded!!


    Mine's just right in size...
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  • WillieB
    replied to Electrical Question
    Running this machine on #10 will not overheat the wire. It might overheat at connections. Depending on conductor sizes, length, & other load, your welder might receive only 200? volts. Then, it will not work as designed....
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  • WillieB
    replied to Aluminium tig problems
    Welders like to blame gas. It could happen in theory, I've never seen it. Empty tank gives those symptoms. The regulator flow meter shows adequate, but tank pressure is low, it'll act up.

    I near always use a gas lens. It's only a diffuser similar to aerator on kitchen sink faucet. It helps...
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  • WillieB
    replied to I HATE my welder, MM 252
    None! If I'm not arcing, I could tie knots in the lead, it'd feed. When arcing it has been nearly a sure thing, it'll birdnest.

    At worst I'd take the contact tip out & use tip cleaner each small weld. I might be 30 seconds into the weld, I see the wire stuttering, the reel lurching....
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  • WillieB
    replied to I HATE my welder, MM 252
    No, I can pass a piece of wire around the gap, I'll say .030 if spark plug gap is a comparison. I see no adjustment of this, only overtightening or under tightening the assembly. I'm not clear how the cap got roller friction, there is space....
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  • WillieB
    replied to Aluminium tig problems
    I haven't read it all, Forgive me, but black soot is gas coverage failure. You can get it many ways.
    Wrong arc length.
    Air leakage in torch or lines.
    Tungsten contamination.

    If you don't have a failure in gas delivery, you are cooking too log to form a puddle. Hit it...
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  • WillieB
    replied to Electrical Question
    Truth is a very small wire will not overheat under the load from this welder. Heat is most a concern at connections, there, it might burn with too small a wire. A transformer based welder is built to run best at rated voltage. The circuit voltage drop is only a component in calculating voltage drop....
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  • WillieB
    replied to I HATE my welder, MM 252
    So close I can't see the gap....
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  • WillieB
    replied to I HATE my welder, MM 252
    I can't find any. I run a silky rag on hard wire, find no snags. The flux cored Dual shield has only tracks put there by the knurled rollers & spin marks where the roller slipped. I feel that has to make friction in the liner....
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  • WillieB
    replied to Electrical Question
    If in fact your welder is adapted to single phase:

    The voltage on three phase circuit is likely 480 volt. If changing to 240 volt with three phase, current will double.
    Then, when converting to single phase, another factor of 1.73 applies. If it in fact was powered by 240 volt, you...
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  • WillieB
    replied to I HATE my welder, MM 252
    It has gotten progressively worse. At the onset of birdnest with .045 Dual Shield, a new liner MAY have improved the problem slightly, though it is hard to say. My gut feeling is that the liner is fine. This is a problem with all wire sizes & three different guns.
    I don't use Dual Shield often....
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    Last edited by WillieB; 10-18-2021, 06:25 AM.

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  • WillieB
    started a topic I HATE my welder, MM 252

    I HATE my welder, MM 252

    Hello again. I dropped out when I found it impossible to log in a few years ago. I bought a Millermatic 252 in 2010. It has been a great welder, but it always had limitations. The M25 gun it came with never would run .023 wire. The troubleshooter at local Airgas where I bought it said: "I can sell...
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