Miller Electric

Welding Discussion Forums

Home » Resources » Communities » Welding Discussion Forums
Miller Welding Discussion Forums - Powered by vBulletin

Results 1 to 10 of 11

Hybrid View

  1. #1

    Default Auto Frame Steel Type

    Question I need answered is: What kind of steel to they make car frames out of?

    Back Story:
    I'm pretty new to welding and a guy at work asked me if I'd fix a small crack in his car frame. Claimed the auto repair shop wouldn't do it citing liability. I haven't seen the crack yet but his description goes like this:

    Backed into something with his bike carry attached and the force carried through the carry and the class II receiver enough that it snapped one of the bolts that hold the hitch to the frame and craked the frame around the hole.

    As described it doesn't sound bad but I've been around long enough that that might also mean he should not say anything to a dealer and trade this car in for a new one. :-)

    If it IS just a small crack out of the bolt hole I don't think it's a big deal to drill the end of the crack and then weld back to the hole. Maybe even weld on a small patch.

    Any experienced thoughts out there?

  2. #2
    Join Date
    Oct 2012


    Its a unibody car and this is a small frame section thats part of the unibody right? If so its already welded together so you can weld on it some more.

  3. #3
    Join Date
    Dec 2007
    Los Angeles


    Dealer gives a rats arse about the crack at trade in time- if he is trading it in I wouldn't bother touching the car.

    can't help on the welding part
    Ed Conley
    Passport Plus w/Spool Gun
    Miller 125c Plasma 120v
    O/A set
    SO 2020 Bender
    You can call me Bacchus

  4. #4


    Since your new to welding and the job is probably going to require overhead welding while lying under a car trying to fuse Chinese steel of questionable alloy made from recycled Blatz cans and Skoal lids, I would probably advise against it.

    Hammer it flat, throw a washer on the hole and crank a new bolt down good and tight.

  5. #5
    Join Date
    Dec 2008


    If a body repair shop wouldn't touch it, you probably shouldn't either........
    Miller Syncrowave 200
    Homemade Water Cooler
    130XP MIG
    Spectrum 375
    60 year old Logan Lathe
    Select Machine and Tool Mill
    More stuff than I can keep track of..

  6. #6
    Join Date
    Sep 2005
    16919 Pole Rd. Brethren, MI 49619


    If a body repair shop wouldn't touch it, you probably shouldn't either........
    Why not, you figure all body shops want this work, or are even capable of welding anyway. If there is a good fix for it why not. Most of these do not need to be drilled. weld over it with a wire feeder nice and toasty, drilling can help burn thru on starts, penetration, or if its thick grind a little. I will agree, could be difficult, location, position etc.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts

Warning: Function split() is deprecated in /mnt/stor3-wc1-dfw1/357822/357839/ on line 77

Welding Projects

Special Offers: See the latest Miller deals and promotions.