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Old 03-03-2013, 05:25 PM
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Diffrent shades of colors in black base coat

Today I sprayed HOK black bc25 and I am getting different shades of colors through out my panel. I see brown, blue, black and maybe green. I stirred and shook the can very well, pour it into a mixing cup, reduced 2:1 and stirred. I sprayed 4 coats and every coat I sprayed, the different shades of colors would appear in different spots. I have shot this same paint in the past and did not have this problem so I don't know what's going on. Can someone please tell me what I could be doing wrong to cause this? Thank you.

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Old 03-04-2013, 05:54 AM
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What are you painting over?
Is it a consistent color?
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Old 03-04-2013, 07:04 AM
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Quote:
Originally Posted by donskjr View Post
Today I sprayed HOK black bc25 and I am getting different shades of colors through out my panel. I see brown, blue, black and maybe green. I stirred and shook the can very well, pour it into a mixing cup, reduced 2:1 and stirred. I sprayed 4 coats and every coat I sprayed, the different shades of colors would appear in different spots. I have shot this same paint in the past and did not have this problem so I don't know what's going on. Can someone please tell me what I could be doing wrong to cause this? Thank you.
Only one of three things:
1)Batch is bad. (unlikely, lottery winning, odds)
2)You did not mix the paint good before you first poured some out and now it is shot.
3) You used a fast urethane reducer or a low grade urethane reducer and it is changing polarity.

Black is different from any other paint.
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Old 03-04-2013, 10:16 AM
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Thank you. I painted it over spi epoxy black as a sealer and let that cure for 2 days at 70 degrees. I than brought the piece into a 60 degree garage and used spi medium reducer. It took about 15-20 minutes to flash each coat. I think it could be that I did not mix the new can very well.
I bought it in a quart and I found it difficult to stir the paint in the can without it spilling over. Would it be okay if I reduced a whole new can, mix it and put it into a larger container, to be used later as needed? It probably won't sit any longer than 2 weeks. Thanks again.
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Old 03-04-2013, 10:47 AM
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You may have pigment on bottom of can, You could reduce all if you will be using up over a short time, as reduced base setting can (rare) but does happen, can kick the pigment out of suspension.
This will not happen overnight but usually years of storage.

Id vote for go ahead and reduce.
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