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Technical Metal working question.

Discussion in 'The Hokey Ass Message Board' started by 57 Fargo, Apr 22, 2021.

  1. Stupid question for the talented metal workers here. My Fargo fenders have a bunch of high spots from rocks hitting the inside, is a slapper better for smoothing this kind of stuff than a body hammer? Is there a better way? I’m a rank amateur compared to most on here but stubborn enough to fumble my way through it!

    Rear fenders are the victims here.


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  2. A shrinking disk would probably be your best bet.
     
  3. alchemy
    Joined: Sep 27, 2002
    Posts: 16,862

    alchemy
    ALLIANCE MEMBER

    I'm assuming these are little dings the size of a dime, and maybe humped as thick as the dime.

    I'd find a nice very low crown body hammer and a dolly that fits the inside of the fender's crown closely. With the dolly held gently under the bump you can tap straight down on the bump gently. Not hammering like a nail, but like you are quietly knocking on a door with your knuckles. You can always do more taps, but once you've gone too far you are doing harm. Easy does it, in circles on the ding. If you are making a solid clang sound you are done.

    Sometimes it's easier to do work like this with the nice paint still on the surface. You can wet it down to see the sheen and check your progress. Run your open palm over the area. I've found for some reason my left hand can feel dents best, even though I'm right handed.
     
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  4. oldiron 440
    Joined: Dec 12, 2018
    Posts: 2,130

    oldiron 440
    Member

    I've done body work for 45 years and never found the need for a shrinking disk.
     
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  5. Dreddybear
    Joined: Mar 31, 2007
    Posts: 6,015

    Dreddybear
    Member

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  6. the-rodster
    Joined: Jul 2, 2003
    Posts: 6,766

    the-rodster
    Member

    A shrinking disc is perfect for that kind of stuff.

    Rich
     
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  7. bill gruendeman
    Joined: Jun 18, 2019
    Posts: 515

    bill gruendeman
    Member

    I would think a bullseye pick is just the ticket.
     
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  8. Pete1
    Joined: Aug 23, 2004
    Posts: 1,980

    Pete1
    Member
    from Wa.

    I heat the spot dull red and hit it with the water hose. It will shrink back flat.
     
    57 Fargo likes this.
  9. Not even the size of a dime, just multiple little peaks, I’ll see if I can get some pictures later when I’m home


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  10. rockable
    Joined: Dec 21, 2009
    Posts: 3,388

    rockable
    ALLIANCE MEMBER

    As already recommended, the shrinking disc is the way to go. Check out Wray Schellin's Pro Shaper diss. The large one is easiest to use. Check out his videos on YouTube for instruction.

    A bullseye pick would be for "innies", these are "outies", so the shrinking disc is the right tool.
     
    57 Fargo likes this.
  11. Ok, I may have to give it a shot.


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  12. ekimneirbo
    Joined: Apr 29, 2017
    Posts: 1,905

    ekimneirbo
    Member
    from Brooks Ky

    Glad to see everyone in agreement for a change........:p
     
  13. I think I always assumed that a shrinking disc was more for oil canning type stuff not the kind of sharp little points I have, as I said though I just fumble my way through this stuff!!


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  14. gene-koning
    Joined: Oct 28, 2016
    Posts: 2,374

    gene-koning
    Member

    The shrinking discs only heats the high spot, and it does so pretty quickly. Once hot, you pull the disc away, and the bump disappears.
     
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  15. anthony myrick
    Joined: Sep 4, 2009
    Posts: 7,685

    anthony myrick
    Member

    Hmmmm
    I like to gently tap those down.
    Then finish with a disc.
    If no disc, then tap with a hammer. Use a paint stick with sand paper to monitor progress.
    This doesn’t remove metal like a file and will show highs and lows. Once you are satisfied, finish with a file. Then DA.
    Shouldn’t require any filler.
     
    Last edited: Apr 22, 2021
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  16. alchemy
    Joined: Sep 27, 2002
    Posts: 16,862

    alchemy
    ALLIANCE MEMBER

    Yep, gentle little taps. Check after you do that and let us know if it needs anything else.
     
  17. Beepx22
    Joined: Nov 12, 2020
    Posts: 21

    Beepx22

    Eastwood has a bunch of great videos that might give some pointers too.


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    57 Fargo likes this.
  18. I have zero expectations of having no filler! I’m not opposed to using a little here and there where necessary, always open to learn more.

    I had fully planned on gentle taps, didn’t know if there was a tool better than a body hammer to administer those taps.

    The chaos will be documented on my thread for my Fargo.


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  19. Fortunateson
    Joined: Apr 30, 2012
    Posts: 4,028

    Fortunateson
    Member

    I've said this before and I'll say it again... body hammers should really be called body tappers.
     
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  20. chopolds
    Joined: Oct 22, 2001
    Posts: 5,932

    chopolds
    Member
    from howell, nj
    1. Kustom Painters

    If they're small, a shrinking disc is my first choice. But being more 'old school' I'd grab a slapper file, or planisher, and a dolly that fits the final contour, if they are large.
     
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  21. alchemy
    Joined: Sep 27, 2002
    Posts: 16,862

    alchemy
    ALLIANCE MEMBER

  22. anthony myrick
    Joined: Sep 4, 2009
    Posts: 7,685

    anthony myrick
    Member

    These are cool
    0B7E78CD-E43B-4C20-A278-9B8F26FA5113.jpeg
     
    57 Fargo likes this.

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