base coat clear coat wet sand, and now what?

This all depends on what you want the car to be. Any spots you cut through will need more base applied and a blend will be needed. If you plan on clearing the car again you really will only need to sand with 600-800 grit. You can apply base over both of those and still have adhesion. Remember those are orbital scratches not straight scratches. If you plan on applying the base you might want to step it to 1000 grit depending on how much metallic you have in the color if you are hand sanding straight scratches.

Gun tip size can make a difference for sure. I spray daily with a Sata 1.3 RP for clear. You should get an old fender or panel and prep it for clear and set your gun up before spraying the car.

What gun are you using? What pressure? Full trigger? How wide is your pattern set?

Do you know what a pattern overlap is? Most basic painters use about a 50 percent overlap. This is the pattern in which you spray. One coat left to right, then move up 50 percent and overlap the fist coat and keep going. I spray at probably a 75 percent overlap but I move my gun close to the panel and move extremely fast. This is because I use a production clear and it has different spray techniques needed.

Remember the flatter the substrate the flatter your paint film will be.

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