Thursday, February 25, 2021

JB Cold Welding a new Duct pipe tailgate?

 So I think this might work. My first "duct pipe" tail gate repair got torn off in the car wash!! Luckily the duct pipe did just come loose and not just fall out. So I think it must have caught rust - or the rust is just spreading fast. I have tried phosphoric acid repair and then painting over the rust but apparently the rust was spreading UNDER the paint.

So I just put on three pieces of duct pipe - I had gotten the wrong size before as stove pipe. Galvanized steel. So I just cut it into three pieces - one long piece and two smaller pieces on the edge. This time I just covered OVER the outside of the tailgate - as more holes appeared. I had a huge hole of missing tailgate from the rust.

So now it's all covered and I used three packages of "Original" JB Weld that is much stronger than the JB "kwik weld" - only this is a very slow cure especially in this colder weather. It will cure - the first cure was holding after 12 hours.

So now I'll wait till noon tomorrow and then I'll do Bondo OVER the metal - I've never done Bondo before. So I'll have to use a hair dryer to cure the Bondo as that I don't think - well I guess it can also cold cure but it hardens up fast in the cold. So I have it stored inside.

It should work if I mix it up inside.

Then I need to buy some white paint. And of course the rust will keep spreading on the tailgate but since it's spreading UNDER the paint - there is really not much I can do.

So the tailgate obviously gets the most salt from all the splash back. And I did no rust treatment on the car for its first ten years while we drove on a very salty gravel road. It was constantly treated with salt.

It's amazing that the tailgate has held up as long as it did.


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