What exactly do you mean by blochy?
But to remove the paint, you can just use a light sanding of 600+ grit sandpaper. Depending what you meant by blochy, you can probably put a couple more coats over it without issue, but make sure that your technique is correct or you'll just get more "blochy" paint.
Some tips:
- Clean the surfaces that you are painting with atleast water (if not rubbing alcohol).
- Spray from atleast 8" away, no closer (if it's from a spray can).
- Make sure the place you are spraying in is room temperature, and not too humid.
- Several light coats is better than one heavy (wet) coat.
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- "dman"
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