| Q: I am using Rust-Oleum spray paint to paint a piece of plywood. I am painting in a garage. My problem is that the paint ends up mottling or fracturing over a very large area. Why would this happen?
A: By mottling I assume you mean that either the color is going on stronger in some areas than another, or that some areas absorb more finish than others. I will admit that spraying a large surface with an aerosol is a bit tricky. You have to overlap each stroke by about half to ensure that you get even coverage, so what you are describing may in fact be an application issue. If it is, don’t worry, you can even it up on the next coat. If you have uneven absorption, it usually means you did not use enough primer on the coat prior to your color coat, or you did not sand the plywood sufficiently before applying the primer.
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