The fusor is paintable immediately or up to 30 days without scuffing. I can't imagine scuffing I because I drys super stretchy. I've used a lot of fast and firm. That product isn't near as good as the fusor 800 TM. The problem with any of them is contamination after applying. Its definitely the last step before paint. I have a problem painting it immediately but it says you can. It's a urethane and is cured my moisture. Basically the same thing they glue windshields with. It holds good to vertical surfaces and tools easily. I usually use my finger or an acid brush or two brushes taped together. You can let it set for an hour or so and wet your finger and iron it out real smooth if you need to. Which ever product you use, make sure you use a sealer before the paint.
