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Hot Rods Treating new bare steel

Discussion in 'The Hokey Ass Message Board' started by gearheadbill, Sep 3, 2014.

  1. gearheadbill
    Joined: Oct 11, 2002
    Posts: 1,339

    gearheadbill
    Member

    IMG_0707.jpg IMG_0707.jpg I'm working on a Brookville body that has begun to develop some surface rust in places; fingerprints, welding oxidation etc..How are you guys treating bare steel? Both as it sits around and also just prior to primer. I DO NOT want to prime it yet but would like to somehow treat the steel so the oxidation slows down a little. I have done acid washes prior to paint before but hope there is a better, cleaner, maybe simpler way. Thanks.

    pic is what I'm working on only after I first got it home. Way uglier now. I live in the wet PNW. Humidity is always above 80%.
     
  2. Kiwi Tinbender
    Joined: Feb 23, 2006
    Posts: 1,155

    Kiwi Tinbender
    Member

    Bill--I`ve used Chemfil DX 79 Metal Conditioner for all my bare metal work. I put it on with a brown Scotchbrite pad, scrub/apply then use a paper towel to wipe off the surface. Don`t forget to wear some substantial rubber gloves. You can recoat/rescrub at any time, and it washes off with Laquer/Wash thinner. I leave it on.You are supposed to be able to paint over it. I have had no complaints from painters in more than 20 years of doing this.
     
  3. gearheadbill
    Joined: Oct 11, 2002
    Posts: 1,339

    gearheadbill
    Member

    Kiwi...is this stuff available here in the USA? I'll do a google search as well. Thanks. Sounds like exactly what I'm looking for.
     
  4. falconsprint63
    Joined: May 17, 2007
    Posts: 2,358

    falconsprint63
    Member
    from Mayberry

    seems like the ASC rails cam rubbed down in lindseed oil. it took FOREVER for any surface rust to start. It was a little tacky to the touch, but it cleaned of pretty easily for welding and whatnot.
     
  5. gearheadbill
    Joined: Oct 11, 2002
    Posts: 1,339

    gearheadbill
    Member

    After reading some online info re: the PPG Chemfil DX 579 Conditioner it sounds just like DuPont Kwik-Prep 244S, which I have used in the past. I may give it a try since I still have some. Forgot all about it. Thanks.

    Anyone else?
     
  6. gearheadbill
    Joined: Oct 11, 2002
    Posts: 1,339

    gearheadbill
    Member

    How about chemically removing the surface rust prior to using the oil? Any suggestions?
     
  7. john worden
    Joined: Nov 14, 2007
    Posts: 1,836

    john worden
    Member
    from iowa

    Acid or oil take your pick. There is no easy, clean or simple method. It goes with the territory.
     
  8. Turbo26T
    Joined: May 19, 2004
    Posts: 1,260

    Turbo26T
    Member

    Im surprised no one has reccomended Gibbs....from what I've read on here ,it's supposed to be the stuff....
     
  9. Go into the kitchen and get the old lady's cooking spray. I personally like cocoanut. Cleans up with a little soap and water
     
  10. falconsprint63
    Joined: May 17, 2007
    Posts: 2,358

    falconsprint63
    Member
    from Mayberry

    if it's really just light surface rust on fresh steel I'd hit it with an abrasive (sand it) and if you're really concerned about it coming back treat it with any of the over the counter phosphorus based rust transformers--por 15 makes one, eastwood has it's line, extend is one of the name brands you should be able to get at your big box parts store they're all pretty much the same thing. it's the stuff that turns rust black.
     
  11. Baron
    Joined: Aug 13, 2004
    Posts: 3,672

    Baron
    Member

    One thing I have found over the years is when not working on the car, keep the body covered with a couple of old bed sheets. Makes a big difference.
     
  12. atomickustom
    Joined: Aug 30, 2005
    Posts: 3,407

    atomickustom
    Member

    Ospho. Available at Ace Hardware, something like $20 a gallon. A gallon is enough to do several complete roadsters. Seriously, it's thin like water so it goes a long long way.
    Coated a freshly-blasted '51 Chevy body a few years ago that was starting to flash rust after a week in my shop. No signs of flash rust since then.


    Posted using the Full Custom H.A.M.B. App!
     
    jodell likes this.
  13. greybeard360
    Joined: Feb 28, 2008
    Posts: 2,098

    greybeard360
    Member

    Ditto on the Ospho. I keep some in a spray bottle. Put on some rubber gloves, spray a little on and wipe it with some of those blue paper towels. I treat all rusted surfaces before and after repairs and any new metal parts I weld in place.
     
  14. David Totten
    Joined: Nov 21, 2005
    Posts: 248

    David Totten
    Member

    Must for rust. home depot. Lowes etc. spray on keeps rust off for a year. great stuff.
     
  15. Richard Head
    Joined: Feb 19, 2005
    Posts: 547

    Richard Head
    Member

    I have a 30 year old container of the 244s that I use on to clean light rust on smooth metal. I like it because it dries fast and since its alcohol based, it doesn't need a water rinse. It doesn't do much on deeper rust though.

    Dave
     
    loudbang likes this.
  16. gearheadbill
    Joined: Oct 11, 2002
    Posts: 1,339

    gearheadbill
    Member

    Dave, I'll try the 244S and scotchbrite...see what happens. I have also heard good things about Ospho, just never tried it.
     
  17. Richard Head
    Joined: Feb 19, 2005
    Posts: 547

    Richard Head
    Member

    Ospho is pretty harsh compared to 244s. I would recommend diluting it down a lot before using it on light rust. When I worked up at the lazy D, we just DA'ed the bare metal stuff every couple of months. One guy was really acidic, you could always tell where he worked last.
     
  18. crminal
    Joined: Jun 6, 2010
    Posts: 1,941

    crminal
    Member

    Having good results with Gibbs. Won't remove rust but seems to keep it from showing up.
     
  19. A Boner
    Joined: Dec 25, 2004
    Posts: 8,158

    A Boner
    Member

    Gibbs, and it dissolves surface rust......and the best price I could find was at Roadsters.com!
    Try it you will like it, and buy a case of 12, 'cause your friends will want some. I just bought my second case!
     

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