soft metal

Discussion in 'Airheads' started by bay, May 26, 2013.

  1. bay

    bay Adventurer

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    hi, i have decided to repaint my tank,so i have started to strip the paint off and noticed that the metal on the top seems to be very soft so soft in fact i can scrape a grove in it with my finger nail .is this normal for these tanks.78 r100/7 by the way.
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  2. Airhead Wrangler

    Airhead Wrangler Adios Mexico

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    Is it metal or dent filler?
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  3. bay

    bay Adventurer

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    its metal,but i can see a very defined area ,can you get a filler made from metal
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  4. Rucksta

    Rucksta SS Blowhard

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    Old school panel beating before synthetic fillers was to wipe with molten lead.
    Maybe some one practiced a lost art?
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  5. rambozo

    rambozo Been here awhile

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    Body solder is metal type filler, think its lead based but I could be wrong

    Could be that on your tank, it would be a good quality repair if it is
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  6. rambozo

    rambozo Been here awhile

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    Beat me to it rucksta
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  7. disston

    disston ShadeTreeExpert

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    It might be filled with lead or have been patched with solder. Using lead to fill in dents goes back a long time. Before there were the modern plastic fillers we use these days lead was the standard filler. It is melted easily for application and finished with files. Back in the 1950's custom cars were popular and the body work was done with lead. Sometimes a lot of lead which led to the nick name of "lead sleds" of that era. The metal is soft and can still be found being used by a few people.

    Solder is used these days mostly for patching holes in tanks and it is usually harder than lead but there are softer solders too.
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  8. Plaka

    Plaka Brevis illi vita est

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    Try pouring a little boiling water over it. If it melts I can tell you what it is.

    But it sounds like someone did a metal based repair. Old school but still done on British cars (that I know of). Still commonly done to join roof gutters on houses (high end work). You can get bars of the solder used for than and try body work with it. It's an art, you melt with a LARGE electric soldering iron then work it with wooden slicks. Take an inspection mirror and see what the inside looks like.
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  9. bay

    bay Adventurer

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    hi,i tried to melt a small area of the soft metal on my tank today and nothing happened i also looked inside with a mirror and Theres no dent,is there any way the metal can deteriorate with out rusting.the area is about 15cm long and the same wide,can some paints do it as it had been resprayed before
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  10. Boxer Metal

    Boxer Metal Mad Scientist

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    Lets' see a picture of it?
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  11. Plaka

    Plaka Brevis illi vita est

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    it can deteriorate. You would know all about it. Takes some strong stuff (stronger than continous salt spray) to do it. No worries. You can prime and paint it as well as work bondo or spot putty over it. Body solder is absolutely the top rank repair..and some cars are made with it from the factory. My '66 MG had the body panels joined with solder.
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  12. Houseoffubar

    Houseoffubar HoFmetalworks.com

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    I suspect you can't heat it enough to "melt" it, without ruining it. It is probably a good repair as is, don't mess with it.
    You probably can't see the dent inside, because it is not a deep bad one.
    I would bet it you heat a piece of steel rod to yellow hot, and touch it to the filler, it WILL melt. I would simply leave it alone, if it were mine.
    #12