DNA double helix pen holder

Although I have successfully printed my Kobra 3 Max, I still recommend using Core XY architecture printers such as S1C to print. When using i3 architecture printers such as Kobra3 to print the upper part, it may cause shaking, resulting in a decrease in quality and a higher probability of failure. This model can also be used as a printing test, with a bridging distance of 72mm and a vertical inclined spiral structure of 200mm height. At the same time, the printer's ground stability, bridging effect, hanging effect, and vertical stability can be tested. A pen holder with a height of 200mm, suitable for pens that need to be placed horizontally, such as my acrylic marker. It is also a desktop decoration ornament. The diameter of the pen opening is 14mm.