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-   -   47-55.1 The Pits (https://67-72chevytrucks.com/vboard/showthread.php?t=786844)

Northern 52 05-14-2019 05:36 AM

The Pits
 
I have little experience with body work and could use some advice for dealing with rust pitting. My cab, hood, and fenders, which are very straight, sat out for many years in an acidic environment. The surface rust has pits that don't sand out and I'm afraid if I keep at it, the metal will be very thin. Is there a prep or a process to take care of the rust in the pits so they don't come back?

Thanks

mongocanfly 05-14-2019 07:58 AM

Re: The Pits
 
sandblasting...there are some acids that will work as well..be sure to use epoxy primer on all bare metal...this would be answered better in paint and body section

mr48chev 05-14-2019 12:57 PM

Re: The Pits
 
Getting all the rust out of the pits as he suggested and high build primer and lots of block sanding. It's going to take some work but it will come out.

b-mac 05-15-2019 12:47 AM

Re: The Pits
 
I'm not an expert, but I'm using Ospho to convert the rust in the deep pits. Then neutralize with water, clean with thinner, and prime.

Do some research on it. You'll get mixed reviews. Cheap enough, and I just picked up some at Ace Hardware today.

If you look at Eastwoods "Afterblast" or POR's "Surface Prep", along with most rust converters, the active ingredient it Phosphoric Acid...Ospho.

MiraclePieCo 05-15-2019 02:27 AM

Re: The Pits
 
Quote:

Originally Posted by mr48chev (Post 8525473)
Getting all the rust out of the pits as he suggested and high build primer and lots of block sanding. It's going to take some work but it will come out.

High-build primer will fill those pits.

b-mac 05-15-2019 01:55 PM

Re: The Pits
 
https://youtu.be/2IZBtx0DqGM


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