Abstract: The invention relates to a method for operating a control logic of a blasting system (100), the blasting system (100) comprising at least one blasting nozzle (111) for blasting blasting material (91) into a process chamber (110) of the blasting system (100), wherein at least one component (90) can be arranged in the process chamber (110), wherein the blasting material (91) is supplied to the at least one blasting nozzle (111) from a blasting material exchange container (200) via a blasting material circuit (180, 181-185) of the blasting system (100), and wherein the method comprises: —receiving (3010) control data (70) from a logic element (201) of the blasting material exchange container (200) which is detachably arranged in the blasting material circuit (180, 181-185), and—operating (3015) the blasting system (100) on the basis of the control data (70).

Abstract: The invention relates to a method for treating a surface of a molded part produced according to a 3D printing method using a plastics material, wherein a solvent selected from the group consisting of halogen-free and non-polar hydrocarbons and derivatives thereof and/or a solvent selected from the group consisting of bio-based solvents is applied to the surface of the molded part. The invention also relates to a device for treating a surface according to the method according to the invention.