It also depends on what you are painting. If you paint a body with acrylic, it will take ay least a day. But if im painting small parts, acrylic takes maybe a few.hours. All depends how thick it is applied. If I airbush an engine with alcohol thinned acrylic, light coat,its touch.dry within the.hour. I don't use enamel without lacquer thinner OR a food dehydrator. Combining those allows an enamel painted body to be.dry in about 2 days. Straight enamel from a can will take at least a week to dry. Tamiya in the can dries very fast..within a day or so.