K8200 Nordic Chill Ultimate Cooling

thingiverse

I built this cooler after trying every other solution out there. When installed correctly, this unit cools down the PTFE part of the extruder and creates a swirly cooling effect on your finished piece. It fits all fans and can be easily modified to suit any need. I use a setup with a single 70mm fan that never goes above 40% capacity, keeping everything cool while keeping noise levels down during printing. I haven't tried it with other fans, but there's no reason why it wouldn't work the same way. The concept is straightforward: Create a turbulent air curtain flowing around the extruder and downwards onto your piece, preventing single-sided cooling. Small holes direct some air towards the extruder shaft, but PTFE tape prevents it from entering the hot end. This keeps the hot end cool while maintaining everything else at optimal temperatures. Two other holes direct air to the extruder motor, keeping it running smoothly. Mounting for a DOUBLE 40mm radial blower fan has been added to this design. Print Settings: * Printer: K8200 * Rafts: No * Supports: Yes * Resolution: 0.2 mm * Infill: 20% * Notes: Print the model upside down, using supports in the openings at both ends and on the semi-circles on the bottom sides only. No support is necessary for the nozzle. My print experienced some side issues due to an inconsistent nozzle size (software used a 0.4 mm nozzle while the hardware has a 0.5 mm one). The entire printing process took about 5 hours to complete. Post-Printing Instructions: 1. Wrap PTFE tape (same type used by plumbers) around the shiny disc that holds the hot end in place, leaving a 2mm buffer. Please see picture PIC_PTFE for visual reference. 2. Run your wires however you like, either near the heater or at the top as I do. 3. Install Nordic Chill using the screws located under the extruder assembly to the right. 4. Decide on which fans you want to use and proceed with installing them using zip-ties. 5. Install fan adapters or blankers using the same method with zip-ties. Don't worry about small gaps; this system can handle it easily. 6. Install your chosen fans again, utilizing zip-ties for support. If using a blanker: You will find five tiny holes within its structure that you can experiment with by drilling them up to improve airflow. Tape over any openings that are too large, or simply print a new version of the part if needed