delta (kossel mini) vertex for 2020 extrusion with motor shaft support and tensioner

thingiverse

When my delta vertices began warping due to heat from the bed and fluctuating belt tension, I realized it was time to design new ones and tackle the issues that had been bothering me. Specifically, 1. The distortion of the motor shafts caused by belt tension resulted in a noticeable upward tilt, which I remedied by adding a bearing to support the shaft on the opposite end, 2. the awkward method of tightening belts was distorting the geometry, and 3. the aesthetics of the circular corners were not to my liking, although this is largely a matter of personal taste and the .scad files still allow for circular corners. The tensioner employs an M4 screw measuring 30cm in length, while the motor shaft is supported by a bearing with an outer diameter of 16mm, an inner diameter of 5mm, and a thickness of 5mm. This corresponds to a likely bearing size of 625. The up-to-date .scad files are available in the repository at https://gitlab.com/parts/deltellery, offering numerous customization options for those who need them. I have been using these vertices for approximately one year but only recently found time to upload…