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  1. #1
    Join Date
    May 2009
    Location
    Friendswood,TX
    Posts
    9

    Default Help for a novice

    OK so everyone warned me about not over heating my projects. But like the newbie I am, i over estimated what that entailed. I have over heated the roof of my '56 Studebaker Pickup. I think it's called coffee canning or soda canning? Now my roof is pretty deformed and when I try to straighten it in one spot, The other spot moved. What can I do?

  2. #2
    Join Date
    Aug 2006
    Location
    Raymore Missouri
    Posts
    1,920

    Default

    I saw a video on you tube once about shrinking metal. Heat small areas with a torch and then cool with water. This will shrink the metal. Go easy and don't rush...
    Nick
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  3. #3
    Join Date
    Dec 2005
    Location
    wisconsin
    Posts
    836

    Default

    The term is oil-canning. Yes you need to do some shrinking in the RIGHT areas, and the RIGHT way. The torch/water idea, well shrinking, also makes that spot hard, causes stress, and almost impossible to work out, so I would avoid it at all costs. Using heat, some sand bags, and a spoon you can work out oil cans pretty quickly. Visit www.tinmantech.com for some learning material and tools if you dont have them. Oh and I wouldnt bother with a "shrinking disk" either, that works on the same principal as the torch/water. Been there, tried it, tossed it.
    -Aaron
    "Better Metalworking Through Research"

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  4. #4
    Join Date
    May 2009
    Location
    Friendswood,TX
    Posts
    9

    Default

    Thanks Guys, I thought I was completely screwed.

  5. #5
    Join Date
    Sep 2005
    Location
    Texas
    Posts
    279

    Default

    Trip over to San Jac So. to the autobody class shop, ask for David Brasden(sic) or Jake Staul, the chief instructor and his assistant, they can give ya some pointers to eliminate the oil can effect.
    Good luck
    L*S

  6. #6
    Join Date
    Nov 2006
    Posts
    388

    Default

    SyncrowaveŽ 200
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  7. #7
    Join Date
    Sep 2005
    Location
    Salem ,Ohio
    Posts
    3,861

    Cool

    You need to shrink it back into place. The best way is with more heat than cool it quick with wet towels. There are lots of tricks to do it with a shrinking hammer and a dolly too. The best way i have seen is how the guys over at the metalworkers site do it. Is take an old SS fry pan lid and put it on a buffer and go over the area to heat it up then cool it quick with the towels. You must use a buffer for low speeds not a 20,000 rpm grinder that will make a missle. You may be able to turn an abrasive disc around backwards and run the paper side to make heat with a disc grinder you will have to try it. I will dig up some info...Bob
    Bob Wright, Grandson of Tee Nee Boat Trailer Founder
    Metal Master Fab Salem, Oh 44460
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