Abstract: The Invention relates to a 3D-printhead and a 3D-printer comprising a positive displacement pump, a reservoir and a liquefier, wherein said liquefier is upstream of said reservoir, and wherein said reservoir is upstream of said positive displacement pump.
Abstract: The application relates to a positive displacement pump shaft bearing assembly that comprises a shaft having a shaft lodging and a shaft rotational axis. The assembly further comprises a housing having a housing lodging and one rolling element that is located between said lodgings. The rolling element comprises a rolling element centre point that coincides with the shaft rotational axis.
Abstract: A workpiece support system for an additive manufacturing device comprises a workpiece support and a motion system, wherein the workpiece support being connected to the motion system such that it can be detached tool-fee.