The present disclosure is directed, inter alia, to a system that comprises a rapid prototyping device and a material cartridge. The rapid prototyping device comprises a chamber for building up the object. The cartridge comprises a body into which a channel extends. A support is adapted to be movably arranged within the channel. The cartridge is adapted to be removably placed in the rapid prototyping device, and the rapid prototyping device can move the support of the cartridge. In one embodiment, the system helps minimizing costs in the manufacturing of dental restorations by rapid prototyping techniques.