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  1. #1
    Join Date
    Oct 2008
    Location
    Oregon
    Posts
    193

    Default Ground clamp for MIG

    My MM211 has a pretty puny ground clamp.
    Would a toothy ground clamp from a portable battery booster be benificial to change? I have 2 of them.
    Millermatic 211 AutoSet w/MVP
    Century 110 volt 90/110 MIG-Gone to my son, in Texas
    Victor SuperRange OA
    Milwaukee Cold Cut Saw
    Milwaukee Portable Deep Cut Bandsaw
    Milwaukee Hole Hawg
    Jet Horizontal/Vertical Bandsaw
    Jet MD-18 Mill Drill
    Orbit Drill Press
    12 Ton Floor Press
    2002 E-350 V-10:
    1983 F-150 4.9L 6
    2004 Honda ST1300
    2007 Suzuki LTA400F Quad
    1997 Suzuki DR650

  2. #2
    Join Date
    Apr 2009
    Posts
    21

    Default

    I'm not sure the clamps found on battery boosters would give you additional grounding surface area over and above the stock clamp that the MM211 comes with.

    My clamp appears to function just fine...but if I were to replace it I think I would go with something like this

    http://store.cyberweld.com/grounclam400.html

  3. #3
    Join Date
    Oct 2008
    Location
    Oregon
    Posts
    193

    Default

    I have an older version of that one but it won't open past 1 inch, so I ruled it out.
    I'll get the type from Cyberweld.
    I don't see any at my LWS.
    Millermatic 211 AutoSet w/MVP
    Century 110 volt 90/110 MIG-Gone to my son, in Texas
    Victor SuperRange OA
    Milwaukee Cold Cut Saw
    Milwaukee Portable Deep Cut Bandsaw
    Milwaukee Hole Hawg
    Jet Horizontal/Vertical Bandsaw
    Jet MD-18 Mill Drill
    Orbit Drill Press
    12 Ton Floor Press
    2002 E-350 V-10:
    1983 F-150 4.9L 6
    2004 Honda ST1300
    2007 Suzuki LTA400F Quad
    1997 Suzuki DR650

  4. #4
    Join Date
    Oct 2007
    Posts
    2,949

    Default Ground Clamps

    Quote Originally Posted by ligito View Post
    I have an older version of that one but it won't open past 1 inch, so I ruled it out.
    I'll get the type from Cyberweld.
    I don't see any at my LWS.
    ligito: If you wish to replace it, consider a good 200 amp brass, or steel. Something not too cumbersome, as you'll be handling it a lot.

    Welding ground clamps don't open very far, as their spring pressure and design insures an effective "bite" on the material. I wouldn't be changing out for "cheapo battery charger" clamps though, consider a 12V battery compared to a 23.5 V MIG machine with a 150 amp output.

    Dave
    "Bonne journe'e mes amis"

  5. #5
    Join Date
    Feb 2009
    Location
    Ohiowa, NE
    Posts
    265

    Default

    the Vice Grip style work pretty good, or there is a solid copper style that looks like a c-clamp.

    Miller Trailblazer 302
    Smith Torch Outfit
    Lots of Grinders
    Miller Elite Autodark Hood
    O'l Trusty Jackson

  6. #6
    Join Date
    Oct 2007
    Posts
    2,949

    Default Ground Clamps

    Quote Originally Posted by welderdude402 View Post
    the Vice Grip style work pretty good, or there is a solid copper style that looks like a c-clamp.
    Most of those "C" clamp style are 500 amp, and are used for larger leads. I have one fixed up for the Trailblazer when using my wire feeder.

    The smaller MM's have #4 wire for the ground leads.

    Dave
    "Bonne journe'e mes amis"

  7. #7
    Join Date
    Sep 2006
    Location
    Wichita Falls, Tx
    Posts
    177

    Default

    Quote Originally Posted by slicktoptt View Post
    ...but if I were to replace it I think I would go with something like this

    http://store.cyberweld.com/grounclam400.html
    Those are good clamps. However I think it would be a little overkill for that size of a welder. On those clamps, it takes two hands to open them. I just look around before try to open it, to make sure no one sees me straining and struggling to put the clamp on the work piece.

  8. #8
    Join Date
    Oct 2007
    Posts
    2,949

    Default Ground Clamp Overkill

    Ace is right on this one. I've got one of those for my TB and my Sync 200. They do make a 200 amp model, same config, but a lot smaller, I have one on my MaxStar 150.

    The steel type, with the copper strap are reasonably priced, and work great for the small MIGS. You don't need a clamp to open more than an inch, your not going to be welding anything that thick.

    Dave
    "Bonne journe'e mes amis"

  9. #9
    Join Date
    May 2007
    Location
    Grande Prairie, Alberta Canada
    Posts
    729

    Default

    Don't waste a lot of time fussing over the size of the work lead (ground) clamp, or even the spring pressure - I am sure for the size of the machine it will do fine...

    The secret to having any work lead (ground) clamp to work effectively, is to have it attached to a CLEAN surface.

    If you weld for any amount, and cannot hold your bare hand on the work lead clamp, then you have poor contact, and are losing welding energy that is being converted to heat.

    Now, if you are looking for a cheap alternative to your current work lead clamp, look around for an old set of Vice Grips that have lost some of the "bite" in the jaws - Weld a bolt on the back of the pliers, attach to your welder, and you are done.

    Just remember, you still need to have the area CLEAN where you attach it.

    Have a Good Night.
    Later,
    Jason

    Professional Spark Generator by Trade.

  10. #10
    Join Date
    May 2006
    Location
    Texas
    Posts
    19

    Default

    I use this one for my MM175 and it works well, no teeth to wear out. http://store.cyberweld.com/groundclamp300.html

    I also use one of these when there is no place to put the ground clamp.
    http://store.weldersource.com/smg300.html

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