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Farmall & IHC Tractors Discussion Forum
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Tip for determining original paint color

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Purdue Ag

12-18-2006 15:25:26




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Working on some of my vintage implements which have rusted to the point where no paint is evident, I discovered that dipping the parts in muriatic acid for 15 - 20 minutes not only eliminated rust (even penetrating the pits, which sanding and grinding often miss), but also exposed tiny flecks of original factory paint that was previously undetectable. Muriatic acid can be purchased very cheaply at your local hardware store (for etching cement). It's very caustic, though, and needs to be used outdoors, due to the fumes.

FWIW,

Tony

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Elrod

12-19-2006 03:22:47




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 Re: Tip for determining original paint color in reply to Purdue Ag, 12-18-2006 15:25:26  
Muriatic and hydrochloric are the same. They remove rust and chrome. Elrod.



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banjo

12-18-2006 22:58:14




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 Re: Tip for determining original paint color in reply to Purdue Ag, 12-18-2006 15:25:26  
One downside is the part being cleaned will flash rust rather quickly.



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PurdueAg

12-19-2006 11:42:25




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 Re: Tip for determining original paint color in reply to banjo, 12-18-2006 22:58:14  
Good point. I noticed that. I have been using the aerosol rust converter to deal with it (not the paint-on rust converter, as it is water based). I have had pretty good results so far. Just today, while working on the bottoms of my plow, I uncovered a beautiful patch of the original blue paint that is going to make a nice swatch for mixing up new paint of similar color.

One thing that I have found via research and talking with Hugh M. is that the implements were not always painted exactly as the paint committee decisions were supposed to dictate. It's been pretty interesting to see the variation in color.

Tony

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PurdueAg

12-19-2006 11:41:57




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 Re: Tip for determining original paint color in reply to banjo, 12-18-2006 22:58:14  
Good point. I noticed that. I have been using the aerosol rust converter to deal with it (not the paint-on rust converter, as it is water based). I have had pretty good results so far. Just today, while working on the bottoms of my plow, I uncovered a beautiful patch of the original blue paint that is going to make a nice swatch for mixing up new paint of similar color.

One thing that I have found via research and talking with Hugh M. is that the implements were not always painted exactly as the paint committee decisions were supposed to dictate. It's been pretty interesting to see the variation in color.

Tony

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Wardner

12-18-2006 17:35:30




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 Re: Tip for determining original paint color in reply to Purdue Ag, 12-18-2006 15:25:26  
Acidic and caustic are on opposite sides of the pH scale. One substance can't be both.



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Thack

12-18-2006 19:10:56




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 Re: Tip for determining original paint color in reply to Wardner, 12-18-2006 17:35:30  
Causticity is, in chemistry, the property of a substance that causes corrosion, the deterioration of a material. Caustic literally means burning. A caustic substance can be acidic or basic, and concentrated solutions of acids and bases are common corrosive substances. Sodium hydroxide, also known as caustic soda, is one example. Caustic substances are harmful to living tissue and structures, but they have beneficial uses. For example, drain cleaners often use caustic substances such as NaOH to clear clogged drains.

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Wardner

12-18-2006 19:48:39




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 Re: Tip for determining original paint color in reply to Thack, 12-18-2006 19:10:56  
Thanks for the clarification.



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