The invention relates to a process for the production of a rapid prototyping model, in particular a rapid prototyping model for electrolytic or electrophoretic deposition. The steps (a) provision of a mixture of one or more fluid, solidifiable materials and one or more electrically conductive substances and subsequently (b) production of the rapid prototyping model by rapid prototyping using the mixture, such that the rapid prototyping model produced is electrically conductive in one or more areas of its surface due to the presence of the electrically conductive substance or substances and has a pore structure in its inside, are proposed. The invention furthermore relates to a process for the production of a ceramic green compact, a process for the production of a ceramic component, a process for the production of a rapid prototyping model with a metallic coating, a process for the production of a metallic component and the use of a 3D printer having one, two or more print systems and/or print heads for printing out a rapid prototyping model.