3D printing with voxeljet facilities perfect solutions in both sand and investment casting, due to the use of common foundry materials, such as traditional silica sands, PMMA and suitable binder systems. All castable light-weight and heavy-weight metals can be processed with quality comparable to series production and with the same handling. Complex geometries can be represented precisely and time-efficiently with 3D printing. Multiple components can also be joined together. This not only reduces the number of parts but also saves foundries effort both before and after casting.