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  1. #21
    Join Date
    Sep 2005
    Location
    Salem ,Ohio
    Posts
    3,897

    Cool

    [QUOTE=NathanH;298631]
    Quote Originally Posted by aametalmaster View Post


    Heck, there is even a hydraulic oil that is non-conductive that we have use in buckets with non-conductive hoses.
    Yup worked on many bucket trucks for my neighbors tree company...Bob
    Bob Wright, Grandson of Tee Nee Boat Trailer Founder
    Metal Master Fab Salem, Oh 44460
    Birthplace of the Silver & Deming Drill
    1999 MM185 w/185 Spoolgun,1986 Thunderbolt AC/DC
    Spool Gun conversion. How To Do It. Below.
    http://www.millerwelds.com/resources...php?albumid=48

  2. #22
    Join Date
    Nov 2012
    Location
    Northern Arizona
    Posts
    456

    Default

    The equipment I have welded on I have disconnected both terminals of the battery and completely unplugged the Computer (body controller type deal, completely mechanical engine) so I didn't fry it. I also connected the ground as close to the weld as I could. This was for actually striking an arc on the equipment itself. I have plasma cut and welded off of the tailgate of my fancy diesel pickup before. I usually insulated the workpiece from the truck with a double layer of heavy welding blanket. Nothing bad happened, yet. I think a battery disconnect is a good start, but I would try to isolate the welding area as much as possible.
    MillerMatic 251
    CST 280 w/tig torch
    HF-251-D1
    Cutmaster 42
    Victor Journeyman OA

    A rockcrawler, er money pit, in progress...

  3. #23
    Join Date
    Dec 2012
    Location
    Memphis, TN 38133, USA, Earth, Milky Way
    Posts
    62

    Default

    Quote Originally Posted by aametalmaster View Post
    So that means use nylon bolts to attach the bed to the truck so not to pass current from the welder to the chassis. I see...Bob
    Apparently, you don't. Copper bolts can be used, as long as they don't make a continuity path from the welding surface to the truck chassis. Sort of exactly like the cab (body) mounts, which is why a cab/body ground strap is required to provide continuity to the electrical components in the cab. So use junkyard body mounts, and DON'T add any grounding, and your work surface will be electrically isolated from the chassis.

    .

  4. #24
    Join Date
    Jan 2012
    Location
    Marsden, sk. Canada
    Posts
    29

    Default

    never have i had an issue. i have clamped my ground onto my tailgate or now my deck and welded all day with no problems. done that with my truck shut off and idling, hundreds of times. now if i clamped at the back and was welding the frame behind my front bumper with the truck running...then i would worry!!

  5. #25
    Join Date
    Oct 2004
    Location
    Edmonton, Alberta
    Posts
    7,590

    Default

    Hmmm, how many rig welders are out in welding land. Many thousands I'd guess. Many work off the back of there skids. Let alone muffler shops who weld your muffler on, Haven't heard of any problems yet.

    The idea is to clean a good ground point (work clamp) and have it as close to the weld as possible.

    Disconnecting your battery and/or computer leads is absolutely pointless

  6. #26
    Join Date
    Sep 2005
    Location
    Salem ,Ohio
    Posts
    3,897

    Cool

    Quote Originally Posted by Steve83 View Post
    Apparently, you don't
    Yup i do. As long as the mounts work properly and don't rust together or rust out (common here in Ohio) everything is fine. The road salt eats everything...Bob
    Bob Wright, Grandson of Tee Nee Boat Trailer Founder
    Metal Master Fab Salem, Oh 44460
    Birthplace of the Silver & Deming Drill
    1999 MM185 w/185 Spoolgun,1986 Thunderbolt AC/DC
    Spool Gun conversion. How To Do It. Below.
    http://www.millerwelds.com/resources...php?albumid=48

  7. #27
    Join Date
    Feb 2005
    Location
    N.E. SD
    Posts
    1,377

    Default

    Well I must be the luckiest guy in the world, because I have been welding on the back of my 2002 F550 for several years. Stick,FCAW and even the dreaded CAC.
    I have had no problems at all.

    But I haven't tried putting the ground clamp on the front bumper and then welding on something on the bed, either
    Jeff

  8. #28
    Join Date
    Aug 2004
    Location
    Milan Michigan
    Posts
    1,684

    Default

    This has been a topic before, I'm on my 6th welding truck and have always welded off the back of the trucks.

    I weld on equipment on a regular basis, I repaired a fender on a semi today in fact as well as work done on a wood chipper ( Also today )

    I have been welding on vehicles ( At least 3 a week and as much as maybe 10 a week ) for the last 25 years and have never had a problem.

    What I never do is put my ground at the front and then weld on the back.

  9. #29
    Join Date
    Sep 2005
    Location
    16919 Pole Rd. Brethren, MI 49619
    Posts
    4,376

    Default

    The equipment I have welded on I have disconnected both terminals of the battery and completely unplugged the Computer (body controller type deal, completely mechanical engine) so I didn't fry it.
    You figure you WOULD have fried it if you didn't? So how do we know we didn't by doing it?

    One of these days we are going to hear a story about welding etc and I unhooked everything,,,, that act is way more dangerous and likely to cause a fault than leaving it aloneLikeeI mention before,,, chances of dying in commercial airliner vs road traffic. I know people that wont flydon'tnt think twice about throwing a leg over a Harley and dodging traffic.

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