Jun 24, 2015 · The best way to do this is by cleaning the scratch the night before you intend to spray paint over the scratch so that it can dry overnight. Apply Degreaser To The Scratched Area Of The Car: To do this you will require a can of spray based degreaser and a clean rag. Take the rag and apply degreaser to it, then apply gently to the scratched area. Aug 10, 2019 · Especially for candy paint jobs or custom paint jobs. But, never put clear on top of old peeling clear coat. It’s just the wrong way to do it. Feather out all the peeling clear coat, finish it with 400-grit and primer over the feathered edges. Then, wet sand with 400 to 600-grit or you can even dry sand it, depending on your preference. Spray paint is an expensive tool that doesn't offer a lot of customization options for people looking to make their own mixes, but Once you make the can, you can mix the paints however you see fit to create custom colors and refill it when needed. Find the full guide to building it yourself on Instructables.Determining whether you need a quart, a gallon or more of paint depends on the scope of your job. You’re more likely to hide the patch if you paint the whole wall from corner to corner, Heelein says. It’s hard to spend a large amount of money on an unexpected repair, but you can use it as an excuse to paint the room a completely new color.