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Rust removal with paint
#1335315 Tue Nov 26 2019 02:34 PM
Joined: Jan 2016
Posts: 674
D
Shop Shark
I know rust removal has multiple threads but I have not seen this question addressed. I am a fan of the vinegar method but I have a piece that is painted with surface rust popping through in several areas. I want to maintain the look but reduce/remove the rust. What is the bets way to remove rust without damaging the paint. Will vinegar damage the paint will removing the rust. Is there a better method?


Dave from Northern Kentucky
My 54 3100
Re: Rust removal with paint
dgrinnan #1335316 Tue Nov 26 2019 02:46 PM
Joined: Feb 2004
Posts: 21,052
H
Boltergeist
Vinegar will creep under the paint by capillary action and promote more rusting. I'd avoid that altogether. Try scrubbing the rusty areas with a strong hot water and detergent solution and a Scotchbritre pad to mechanically remove the surface rust rather than attacking it chemically. Once the surface is smoothed out, then apply several coats of paste wax to try to inhibit further rusting. A "little bit of rust" is like being "a little bit pregnant"- - - - - -things aren't going to get any better, no matter what you try.
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

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Re: Rust removal with paint
dgrinnan #1335350 Tue Nov 26 2019 06:21 PM
Joined: May 2005
Posts: 7,492
B
General Purpose
The rust is under the paint. You can't remove it without damaging the paint. What "look" are you try to "maintain"?
The method is to sand down to metal. Fix/remove/encapsulate the rust, reprime and etc. Repaint the particular panel/area. Blend.
Don't know what piece you are asking about, how big, how much rust, how bad the rust, where located and type of paint job.


Watch out for careful drivers!!!
I'm away on an ego trip. Will be back on Feb 30.
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Re: Rust removal with paint
dgrinnan #1335354 Tue Nov 26 2019 06:40 PM
Joined: Apr 2005
Posts: 9,026
Grease Monkey, Moderator General Truck Talk & Greasy Spoon
He’s looking for the rusty patina that is all the rage today.


Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne 4dr 230 I-6 one owner (I’m #2)
‘39 Dodge Businessmans Coupe
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Re: Rust removal with paint
dgrinnan #1335357 Tue Nov 26 2019 07:22 PM
Joined: Jan 2016
Posts: 674
D
Shop Shark
I have some spots where the paint is gone and there is rust. I want to knock the heavier surface rust down but not damage the existing paint. I am keeping my truck as original as possible. I am going to take Jerry's advice and just buff it down to remove the heavy stuff and seal it with wax or something. Not a show truck, Not a fo-tina truck, just keeping her as natural as possible while extending her life. I respect the battle scars and age spots. This truck has earned everyone over the last 65 years.

Last edited by dgrinnan; Tue Nov 26 2019 07:23 PM.

Dave from Northern Kentucky
My 54 3100
Re: Rust removal with paint
dgrinnan #1335359 Tue Nov 26 2019 07:47 PM
Joined: May 2015
Posts: 2,814
Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums
You might try Evaporust. They have a gel product you could smear on the rust. But it will turn the rust black. It converts the rust to a black oxide, and you can scrub that off. I would try that on something else first, so if you don't like the look you can avoid messing up your truck. If you're like the rest of us, you probably have something rusty sitting around.


Kevin
First car '29 Ford Special Coupe
#2 - '29 Ford pickup restored from the ground up.
Newest Project - 51 Chevy 3100 work truck. Photos [flickr.com]
Busting rust since the mid-60's
Re: Rust removal with paint
dgrinnan #1335361 Tue Nov 26 2019 07:56 PM
Joined: Jul 2000
Posts: 1,041
G
Shop Clutterist
Sealing it with wax will not work. One rust starts, it is relentless. You have to get it all out. That means get down to bare metal followed by primer and paint.


Gord
----
1954 1/2 ton 235 4 speed
Re: Rust removal with paint
dgrinnan #1367900 Sun Jul 05 2020 11:45 PM
Joined: May 2015
Posts: 2,814
Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums
Update on the recommendation for Evaporust. It WILL remove paint. I just soaked a small metal socket set box in it and the remaining paint came off very nicely.
The box was for an old (like 70+ years) Craftsman socket set that had some significant surface rust. So by removing the rust and paint, I probably destroyed it's collector value. frown But it will look nice after I get the box repainted. smile


Kevin
First car '29 Ford Special Coupe
#2 - '29 Ford pickup restored from the ground up.
Newest Project - 51 Chevy 3100 work truck. Photos [flickr.com]
Busting rust since the mid-60's
Re: Rust removal with paint
dgrinnan #1367927 Mon Jul 06 2020 04:16 AM
Joined: Aug 2018
Posts: 395
2
Shop Shark
Yes it seems to take paint off more often than not
However I have theories
It seems that paint that is poorly adhered or water based will go easy
And some primers are oxide based, which evaporust will attack
Sometimes paints aren’t 100% rust preventative and a layer of rust is under the paint so again it will lift off
Once in a while however the paint survives well
I soaked a 216 carb last week, the bottom steel cast part of the carb had a nice semi gloss black that survived mostly intact even after I scrubbed it with a brass brush.
But generally I don’t expect paint to stay on well after soaking in that stuff
-s


Moderated by  HandyAndy, klhansen 

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