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Kurzfassung auf Englisch:

The field of 3D printing has continuously evolved since the introduction of low-cost machines. One such development are 5 axis machines, which are using 2 additional rotary axes. It has piqued interest in recent times as it promises to deliver better material properties and enable previously challenging processes. Often high quality and expensive components are used to build such machines. Though low-cost approaches like Open5x have been published, the calibration of printers with less accurate kinematic systems proves challenging. In our work we present our low-cost 5 axis 3D printer developed based on the Open5x system and E3D Toolchanger. For this a calibration routine developed for the printer is presented. We were able to achieve stable results by using 3D touch probe attachment in conjunction with algorithms directly run on the 3D printer in GCode. The routine measures the orientation and position of the A and B axes individually by probing the metal axle of the B axis motor and the 3D printed A axis structural elements. Further we show a row of testing patterns which can be printed to check the measured and calibrated values for the rotary axes. Our results allowed us to print a 5 axis movement using a standard 0.4mm nozzle with good results.