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Old 05-26-2013, 08:02 AM   #1
bay OP
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soft metal

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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Old 05-26-2013, 08:23 AM   #2
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Is it metal or dent filler?
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Old 05-26-2013, 08:50 AM   #3
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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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Old 05-26-2013, 08:54 AM   #4
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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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Old 05-26-2013, 08:55 AM   #5
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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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Old 05-26-2013, 08:56 AM   #6
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Beat me to it rucksta
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Old 05-26-2013, 09:01 AM   #7
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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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Old 05-26-2013, 11:07 AM   #8
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Quote:
Originally Posted by bay View Post
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.
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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Old 05-27-2013, 10:33 AM   #9
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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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Old 05-27-2013, 02:37 PM   #10
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Lets' see a picture of it?
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Old 05-27-2013, 04:55 PM   #11
Plaka
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Originally Posted by bay View Post
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
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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Old 05-27-2013, 05:36 PM   #12
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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.
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