Kossel Mini fan shroud

thingiverse

After completing my Kossel, a multitude of issues persisted with maintaining a stable hotend temperature. Notably, the original fan shroud allowed cold air to be blown not only onto the cool zone but also directly at the hot end. To rectify this issue, I redesigned the fan shroud, which now effectively eliminates the problem and operates seamlessly. Additionally, a small portion of air is redirected below the nozzle, thereby enhancing bridging quality. To minimize weight in the effector assembly, an alternative cooling fan was not feasible; therefore, I opted to remove the kapton tape and secure the thermistor with a bendable piece of steel wire. This is accomplished by fixing it with a short M2.5 screw that is threaded into the heater cartridge's fixations screw. For further clarification, please refer to the accompanying picture for detailed specifications. To ensure optimal printing results, align the fan-side of the shroud to match the print bed as closely as possible, thereby reducing the need for support material. I printed my design using PLA, but ABS is undoubtedly the superior choice for this particular application.