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Stripping Paint

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  • Member since
    April 2020
  • 526 posts
Stripping Paint
Posted by Ringo58 on Friday, August 14, 2020 9:30 AM

As my new decals come in today and I can start work on turning 2 gp38 into patched units ( a BN turning into a WC and a CNW going to WSOR ). Whats the best way to remove the logo from the sides of the cab?

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Posted by garya on Friday, August 14, 2020 9:20 PM

Ringo58

As my new decals come in today and I can start work on turning 2 gp38 into patched units ( a BN turning into a WC and a CNW going to WSOR ). Whats the best way to remove the logo from the sides of the cab?

 

Solvaset and a pencil eraser.  Put Solvaset on the logo, maybe a piece of paper towel on it to keep it damp.  Let it sit for a few minutes to soften, add a bit more Solvaset and rub gently with the eraser.

Gary

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Posted by Ringo58 on Saturday, August 15, 2020 2:23 PM

Lastspikemike

 

The best seems to be DOT 3 brake fluid.  Safe for most plastics and eventually fairly devastating to paint.

 

Looks like Ill be snagging a pint of DOT 3 from work and try not to take all the paint off 

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Posted by Overmod on Saturday, August 15, 2020 3:24 PM

Ringo58
Looks like I'lo be snagging a pint of DOT 3 from work and try not to take all the paint off 

But be aware that once you start with the brake fluid, that will be inevitably what you will do to all the areas you apply it to unless you are very careful to watch the progress of the 'softening' of the screen-printed lettering, and after you have 'erased' it you promptly use a different solvent to wash the brake fluid including any that has soaked into the paint under and around the lettering away, and then carefully dry the shell without further rubbing or contact with the visible paint.

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Posted by Mark R. on Saturday, August 15, 2020 3:41 PM

The paint the engine is painted with is a bit different that the paint (ink) the pad printing is done with. That ink will soften just a bit before the base color will. Solvaset tends to work well right on that balance point of softening the ink before the paint. 

Use anything stronger (brake fluid, etc.), you are crossing a fine line into softening both the ink and the paint at the same time. Your chances of success aren't nearly as good.

Mark.

 

¡ uʍop ǝpısdn sı ǝɹnʇɐuƃıs ʎɯ 'dlǝɥ

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Posted by Doughless on Saturday, August 15, 2020 3:53 PM

The logo is probably paint.  Its pretty thick.  I freelance a short line and have removed painted on lettering several times.  I find that using liquids of any kind marrs the finish of the paint that surrounds the decal.  No way to avoid rubbing the surrounding paint when you are trying to scrub off a logo using a liquid.

I scrape them  off dry with a sharp blade held at 90 degrees as to not scour the base paint.  If you're accurate, you can lay small drops of 90% alcohol on the logo to soften it before scraping.  Make sure it has dried first as to not spread the alcohol onto the surrounding paint.

Solvaset might work, but that seems more like a substance for decals rather than a substance that softens/removes paint.

If scraping makes little scratches, a new patch job and decal will hide them.  

Physical removal of the painted on logo with precise targeted scraping strokes perserves the surrounding paint the best, in my experience.

- Douglas

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Posted by EMDSD40 on Sunday, August 16, 2020 1:11 AM

Try 3M automotive scratch remover on a Q-tip. It is technique sensitive. Rub gently and you should end up with original lettering removed leaving a very smooth base coat for decal application.  Finish off with a coat of Dullcote. Done this many times to renumber  locomotives with good success.

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Posted by doctorwayne on Sunday, August 16, 2020 2:03 PM

The ELO was actually a Floquil product, introduced around the same time that Floquil replaced Polly S with Pollyscale.  If it contains brake fluid, I doubt that there's very much of it, as it's a fairly slow-working paint softener.

On the other hand, brake fluid will remove paint quite quickly, but I also discovered that it will damage some plastics just as quickly. 
I used it on an Atlas switcher, and the bodyshell was destroyed very rapidly, to a point where it wouldn't even be a suitable stand-in for a severely wrecked locomotive.  I ended-up buying a new bodyshell from Atlas.

As has been mentioned, painted-on lettering can be removed  using a sharp blade - I prefer X-Acto's chisel-type blades, held at 90º to the surface of the lettering being removed.  Use a light touch, to avoid gouging the underlying paint (or worse, the plastic shell).

Wayne

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Posted by SeeYou190 on Sunday, August 16, 2020 2:52 PM

DOT-3 is awesome for removing paint from brass models. If you MUST use it on plastic, you need to be careful. Too long in the fluid and you will have a damaged model.

Simple Green works well, but the model will have an odor afterward. There are a lot of other alternatives.

-Kevin

 

Living the dream.

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Posted by gmpullman on Sunday, August 16, 2020 2:59 PM

Ringo58
As my new decals come in today and I can start work on turning 2 gp38 into patched units

I've made my own patch units using Microscale trim film. Sometimes I actually like to see the "old" lettering under the paint-out.

Have you considered "patch-out" decals? 

More here.

You could very lightly sand some of the thickness off the underlying lettering using some micro-fine abrasive (or not) and apply your patch out film. Doesn't even have to match perfectly. Then decal your engine number over that.

Just an option, anyway.

Good Luck, Ed

 

 

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Posted by NHTX on Sunday, August 16, 2020 4:52 PM

     I agree with the scraping method but I prefer a used Excel No.11 pointed blade held at a 90 degree angle to the  lettering you wish to remove, especially if you want to retain the underlying paint.  I have used this method to renumber and in some cases, change Cotton Belt engines into Southern Pacific and, vice versa. 

     Start at a corner of a letter or digit, and let the weight of the knife supply the pressure required to remove it.  You are much less likely to gouge your model with a used vs. fresh blade.  When all traces of the unwanted lettering are removed, go over the area with a pencil eraser, just like you were rubbing out a mistake, to smooth any microscopic ridges or scratches and remnants of the unwanted lettering.  After insuring the surface is clear of any debris, I use a piece of a ladies makeup sponge to apply a very thin coat of Pledge acrylic floor polish or, whatever they call it now.  This leaves a smooth, glossy surface ready for decals when it dries.  Apply your decals according to their manufacturer's directions.  Practice on a junker first.  Once you develope your skill, you will have models ready for the acrylic floor polish in less than 20 minutes start to finish, with no fumes and no damage to the rest of the paint.  I've successfully used this technique on almost 90 engines and over 200 cars, from simply removing a number to removing all the lettering on a car, leaving only the body color.  It also works well on removing decals.  The only drawback is, it removes the entire decal film, leaving a bare area much like a patchout would cover unwanted lettering.  Don't throw your used knife blades away, they still have some life in them.

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