casting for piston

here the concept of manufacture of a casting - storage of the piston from the in-line boxer engine https://grabcad.com/library/inline-boxermotor-linear-kolben2-1 the molded parts are not finished yet: they are concepts to modify the production of the parts - to produce a new process technology of the small devices for the production of castings on small machines - efficiently and cost-effectively. not only as castings - in different materials - but also in the new 3d printing process in every material step, igs