The theme of bachelor work is aimed on technological production process of 3D model made by using advanced technology FDM (Rapid Prototyping), and technological production process of coarse aluminum casting. Aluminum casting was made by gravity casting into the sand form. The first chapter of practical work deals with 3D model from creating in CAD software to manufacture process by using FDM technology. The second chapter of practical work describes preparation and manufacture process of a mold for casting. In the last chapter of the practical work is described gravity casting into the sand form.