You don't have to sand between coats of Spraymax 2k. You can, of course. I put three coats on my tank, following the directions, which said to wait between coats until touching an out of the way spot stopped making a thread form, and was tacky instead. It took between 5 and 10 minutes for that. The result was free of orange peel and very glossy. An hour or two later is was ready to put back on the bike.