Is used to increase the size of fissures and platelets of the cracking patterns at thinner film thickness. We recommend you use with the Urban and Clear Crackle mediums as this ensures that these crackle mediums work more efficiently giving a much crackle better result to your work. Using two coats of Crackle Size can give an even larger 'crackle'. We always recommend using a test board to be sure of the finish you want for your project.