[quote} I am wondering the same. I 've been experimenting with a old piece of hood and 4 coats later it still looks like crap. I am starting to think about spraying my car, If I Knew the Mix Ratio. This rolling seems like a lot of Work and I am Not getting the results that everyone is getting. I think I have a problem with the mix ratio. It would be Nice if there was a set ratio, instead of "Should look like 1% milk". Personally I Can't tell the difference between Skim Milk and 2% or Whole Milk for that matter.

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If it helps, I'm using Rustoleum Professional gloss black. I started with about a 40% mix but it was too thin, I switched to a 20% mix for the last two coats and while it sanded smooth and looks great, I think when I do the car I'm gonna go with a 25% mix - or 3/4 cup paint to 1/4 cup spirits. I have some plastic peices that go under my taillights that I am going to start rolling today at the 25% mix. I'll update you on my progress.