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Removing rust from painted metal sign
#761287 Tue Mar 02 2021 08:51 PM
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I know this topic has been talked about ALOT, and I've looked at old posts, but was wondering what's the latest thinking on best approach at removing rust from PAINTED metal signs (not porcelain). I guess this would just as easily apply to oil cans, etc.

From what I'm reading, citric acid, Iron out, and Evaporust are possible chemicals to use. What's working the best or is your "go to" approach? I'm going to be working on this sign and its been a while since I've worked on a rusted painted surface. It's very big, like five feet, so soaking it is kind of problematic.

This sign needs some serious TLC, straightening out, reframing, some rust removal, etc.

Thanks!

IMG_0151.jpg
Last edited by Paul Bell; Tue Mar 02 2021 08:54 PM.

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Re: Removing rust from painted metal sign
Paul Bell #761356 Thu Mar 04 2021 12:03 AM
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Hi Paul, I’ve done a lot of research on this as well because I have a few signs that I have to do to. It seems like a lot of guys are having real good results with prep and etch. That is what I’m going to try after my research.

I spoke with my friend Brian H on here and he had good results with it as well.

Hopefully some more people will share their thoughts on this topic.

-Steve

Last edited by Speedracer; Thu Mar 04 2021 12:04 AM.

-Steve B. (WTB: 48" Flying A button, 48" black/org Phillips 66, White Star, and Chevrolet Signs. Also looking for a Wayne 866. Send a PM. Thanks.)
Re: Removing rust from painted metal sign
Paul Bell #761366 Thu Mar 04 2021 12:39 PM
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Thanks Steve. Is this the stuff?

I’ve have some metal prep I use for bare metal panels, makes sense could work.

CF776911-9019-4C09-96AC-4F405B8F721A.jpeg

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Re: Removing rust from painted metal sign
Paul Bell #761368 Thu Mar 04 2021 01:40 PM
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That's it Paul. Spray it on with a spray bottle, set a timer for 10 minutes, then rinse off. I did NOT scrub with it at all. Just let it sit. Rinse and repeat as necessary. If you go too much it will start to fade the colors.

BrianH


Brian H
Re: Removing rust from painted metal sign
Paul Bell #761369 Thu Mar 04 2021 02:05 PM
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You can also check out this youtube video:

https://www.youtube.com/watch?v=FQSbWKPB0ko

Re: Removing rust from painted metal sign
Paul Bell #761370 Thu Mar 04 2021 02:14 PM
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I’ll give it a shot! Thanks for info!


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Re: Removing rust from painted metal sign
Paul Bell #761392 Thu Mar 04 2021 07:12 PM
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Paul, when you get a chance, please show us how your clean-up turns out. I have a similar project to undertake, and am interested in what you're doing. Thanks. John

Re: Removing rust from painted metal sign
Paul Bell #761430 Fri Mar 05 2021 10:07 PM
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Ok so bought the metal prep from Home Depot. Did as recommended, coated with spray bottle and let sit for 10 minutes, then wash off. Repeated an additional two times (no change in rust on third time).

I also tried it on a porcelain sign, seemed to work on that too but also did a lot of scrubbing on that sign.

So anyway seemed to work pretty well, thanks for info!

A40B1BF9-2AF3-405A-80E3-49CB1092F7FD.jpeg

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Re: Removing rust from painted metal sign
Paul Bell #761431 Fri Mar 05 2021 10:46 PM
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Wow Paul..... that looks great. Looks like a whole different sign. Nice job. Thanks for posting the difference.

-Steve


-Steve B. (WTB: 48" Flying A button, 48" black/org Phillips 66, White Star, and Chevrolet Signs. Also looking for a Wayne 866. Send a PM. Thanks.)
Re: Removing rust from painted metal sign
Paul Bell #761445 Sat Mar 06 2021 09:37 AM
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Wow yeah that looks awesome! It's amazing how nice a sign can look when you pull the rust out of it!!


Steve Coppens
Always interested in Sunoco items!
Really want a Sunoco National pump ad glass!!
Re: Removing rust from painted metal sign
Paul Bell #761486 Sun Mar 07 2021 01:47 PM
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Great results Paul! Glad the sign cleaned up so well. Nice sign.


Brian H
Re: Removing rust from painted metal sign
Paul Bell #761487 Sun Mar 07 2021 02:33 PM
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difference of nite & day, sign has a shine too it now

put the prep & etch on the shopping list - seems too

work great with little labor on the tin signs .. ... cool


RANDY
Re: Removing rust from painted metal sign
Paul Bell #761496 Sun Mar 07 2021 05:52 PM
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Paul...that is incredible! Unbelievable! Has any of the good paint seem to be affected in any negative way?

Re: Removing rust from painted metal sign
Paul Bell #761497 Sun Mar 07 2021 05:53 PM
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Going to have to try this stuff. Nice work

Re: Removing rust from painted metal sign
Paul Bell #761522 Mon Mar 08 2021 02:19 PM
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Originally Posted by Stephenwarren30
Paul...that is incredible! Unbelievable! Has any of the good paint seem to be affected in any negative way?

Steve, I didnt see any loss of paint color at all, no fading. I imagine different paints on different signs might fade though.

Once the sign dried more, like a day or more, there was some white residue left behind on the formerly rusty areas (not all over, just in some spots). Seems to partially come off using wax and grease remover. Probably a residue from the chemical reaction on the rust.

I wasnt going to matte clear this sign, but think I might, if I do I'll add a picture. I think it'll look better. At this point I've added a cedar frame and did some sign straightening... you can see the white residue on the second picture.

1 - Copy.jpgquaker state - Copy.JPG
Last edited by Paul Bell; Mon Mar 08 2021 02:26 PM.

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