Black paint additive for grey screens. - AVS Forum
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post #1 of 4 Old 08-11-2000, 09:37 PM - Thread Starter
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I have found that General's powdered charcoal(Item 570PC) makes a very good additive to turn light colored paints darker.

I was able to buy a good size jar at a local artist supply store.

It is manufactured by General Pencil Company, Jersey City, NJ. It is very fine and mixes easily. The paint should not have a texturing agent such as silica for best results.

2 teaspoons for 3 fluid oz. of paint seems to give about 30% grey. Of course it may vary with paint.

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post #2 of 4 Old 08-12-2000, 07:59 AM - Thread Starter
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I got it at Mittel's in Thousand Oaks. They also seem to have a few other stores scattered around the area.

Also B&W, it would be easier to get in touch with you if you added an e-mail address to your profile. The AVSforum system didn't seem to know how to get a private message back to you.

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post #3 of 4 Old 08-12-2000, 06:36 PM
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Most black paints use the 'pure carbon' additives, which are derived from burning charcoal.... so it appears as if this is the correct additive. There are many sources. The most correct is one that has a uniform and very small particle size. The uniform size and smallness is so that the character of your mixtures does not change depending upon how long you mix it. This can happen in some mixtures, which is why the long mixing time. You can adjust the mixing time after you have acertained how long the mix takes to reach 'finality' in it's character, meaning, the second time around.

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post #4 of 4 Old 08-13-2000, 10:56 PM
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I take it you used a plain white paint and mixed in this black paint? What brand of white paint did you use?
Thanks,
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