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small bumps when spraying

26445 Views 16 Replies 13 Participants Last post by  jack pauhl
While spraying a clean primed door with water base semi-gloss, we ended up with lots of tiny bumps that look like pimples on parts of the door. Does any one know what causes that and how it can be prevented?
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I have had the same problem in the past and couldn't figure it out.
So in order to stop standing around burning time, we sanded and resprayed with no further issues.
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