Usually this depends on the material being cast. Typical values are 0.1 mm for the first 2.5 cm size and 0.002 mm for each 1 cm increase. Compared to other casting processes, its castings have a smooth surface with a fillet radius of approximately 1-2.5 microns. Casting can peocess a wall thickness of about 0.75 mm relative to sandbox or permanent die casting.