This cracked porcelain bathroom sink has been repaired with FIXIT White, and painted with a special porcelain paint. Repaired for a fraction of the cost of replacing it and was easy to do! 1.Begin with a clean surface 2.Apply the desired amount of FIXIT and smooth into place 3.Allow 24 hours to cure 4.Sand the surface 5.Use paint to seal and finish to match the porcelain.