Testor's 1151TT 1/4 Oz Copper Metallic Enamel Hobby Paint If you are airbrushing Testors Enamels, use 8824 or 8825A Enamel Airbrushing Thinner Use the following ratio as a starting point Gloss: 3 parts paint to 2 parts thinner Flat: 3 parts paint to 1 part thinner Enamels require 48 hours to complete cure.