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Old 06-12-2020, 09:45 AM   #1
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... Would you recommend anything special to use to patch them up before sanding and painting?
I have a Polyvance Plastic Welding kit that came with some material called FiberFlex welding rods. It's a fiber reinforced plastic. I have also used the kit to repair cracked and broken under-belly panels. This page has information and a video of a bumper repair similar to how I have done it:
https://www.polyvance.com/video/bumper-repair/fiberflex-bumper-repair-3
On a bumper cover, I prefer doing a 'plastic weld' type of fill to using a body filler such as Bondo.

I did some plastic welding with a soldering iron before I bought it, but really like the temperature control and materials included with this kit. Repair a couple plastic panels and it has paid for itself:

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Old 06-12-2020, 10:07 AM   #2
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Next up for body work is THAT. The paint on the rear was obviously a re-spray that had been done at some time in the past. About a year ago some of the clear coat started to peel from the repair and there were some fine cracks in the paint. Yesterday, I started sanding off the bad clear and Dremmeling out the cracks. The cracks were almost 1/4" through body filler before I got down to metal. That's not good. I had guessed that it was only a little over a millimeter thick.


I had planned to just use filler after digging out the cracks. Now I think I should try something different. I happen to already have a left rear quarter panel cut from a car that I scrapped a few years ago. I have never done a body panel welding-type repair, but I think that it will be the best way to proceed.


...and to think I started 'cleaning' these two cars up to sell because I have too many other projects that I want to get to.
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Old 06-12-2020, 11:49 AM   #3
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Quote:
Originally Posted by 78F350 View Post
I have a Polyvance Plastic Welding kit that came with some material called FiberFlex welding rods. It's a fiber reinforced plastic. I have also used the kit to repair cracked and broken under-belly panels. This page has information and a video of a bumper repair similar to how I have done it:
https://www.polyvance.com/video/bumper-repair/fiberflex-bumper-repair-3
On a bumper cover, I prefer doing a 'plastic weld' type of fill to using a body filler such as Bondo.

I did some plastic welding with a soldering iron before I bought it, but really like the temperature control and materials included with this kit. Repair a couple plastic panels and it has paid for itself:

Thanks, lots of useful information. Looks like the "Bondo" is what I will need for this job.
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Old 06-15-2020, 01:52 PM   #4
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Starting on the quarter panel repair video:

https://youtu.be/m-xhVzEb9tM
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Old 06-15-2020, 03:49 PM   #5
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So far it seems to be working. Bonus: No blood lost, I still have all my fingers, used a mask for the cuts and grinding, and I can still see with both eyes.

Prepping the patch panel.


Cutting the old panel off.


Fitting the patch.


It's hot and I'm tired. I'm going to hold of on the final fitting and welding until tomorrow.
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Old 06-15-2020, 08:11 PM   #6
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Yeah, it`s more labourous, but this is the right way to do this. The patch is fitting nicely!
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Old 06-27-2020, 02:20 PM   #7
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At one point I was regretting not just slapping more Bondo on there and calling it done. Now, I'm glad I did it; for the learning and development of skills. My biggest problem now is the the old re-spray that it had is not the original color anymore. It had faded and yellowed. Now I need to paint from the doors forward for a good color match.

Weld. Lots of spot welds across the seams.



Bare metal primer and spots of filler.



Prime and sand.



Paint.

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