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Old 03-11-2008, 03:09 PM   #1 (permalink)
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Hi All,

Getting ready to try and fix some "I should not have done that" chips on my Poppy Red convertible and I need some help. Went to my paint store and got the paint, hardner, and reducer. What I didn't get was the mixing ratio. I've seen somewhere its 4:2:1 (4 parts paint, 2 parts reducer, and 1 part hardner) and elsewhere it 8:4:1. I only want to mix a small amount at once so I don't waste the paint( acrylic enamels). Any advice on mix ratio and other suggestions would be greatly appreciated.

Doug
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Old 03-11-2008, 03:19 PM   #2 (permalink)
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Doug,
It all depends on which brand paint. Dupont? Any question you can always find the mfg's spec sheet on the internet telling you the ratio as well as how long it takes to flash between coats.

I'm use to using Urathanes, not Acrylics.

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Old 03-11-2008, 03:38 PM   #3 (permalink)
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My mistake, I called the paint store and they said the paint is Urathane and mix should be 8:4:1. I can see a new paint job in the future when I get finished screwing this up.


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Old 03-11-2008, 11:06 PM   #4 (permalink)
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8:4:1? Please give me details of this formula? What is 8? 4? &1? Typically for Urathanes, it's a 1:1 ratio (paint:reducer).


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Old 03-12-2008, 12:29 AM   #5 (permalink)
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Quote:
Originally Posted by cmayna
8:4:1? Please give me details of this formula? What is 8? 4? &1? Typically for Urathanes, it's a 1:1 ratio (paint:reducer).

the 1:1 ratio is for basecoat in a 2 stage base/clear system. i'm curious what brand it is with the 8:4:1 ratio. i assume the "4" should be reducer, the "1" catalyst or vice versa, depending on the system.
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Old 03-12-2008, 07:30 AM   #6 (permalink)
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He's describing a single stage mix. 8 is the paint, 4 is the reducer, and 1 is the hardener.
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Old 03-12-2008, 12:11 PM   #7 (permalink)
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must be some pretty volatile hardner. most of my single stage stuff mixes in the 4:2:1 range. my 40% flattened chassis black urethane mixes 3:1 with a reactive reducer.
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Old 03-12-2008, 03:01 PM   #8 (permalink)
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I did ask for paint to do some spot painting, so hence the single stage mix. When I get home tonight I will get the manufacture. I remember it was not a well known (to me) brand, but on the can with the paint the mix ratio was 8:4:1 (paint: reducer: hardener). I’m sure everyone is getting the idea I don’t know crap about paint and they would be correct. I can build a race engine that will do 100+ on a 1/8 drag strip, but can’t even paint my wife’s nails.

Doug
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Old 03-14-2008, 10:49 AM   #9 (permalink)
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The paint brand is 3rd Dimension (I've never heard of it)

Paint: 5.0 Urethane Enamel
Reducer: DR633 Medium Reducer
Hardener: DH653 High Solids Hardener

Web site: www.sherwin-automotive.com

Doug
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