QMB Ender 3 Microswiss (clone) hot-end and part cooler

cults3d

This is a remix of my QMB cooler for the Microswiss clone hotends, and it has not been tested with a genuine Microswiss yet! Please let me know the results if you test it with a real one! QMB stands for Quiet, Modular, Blower-based Ender 3 hot-end and part cooler. If you have an idea of a catchier name, feel free to suggest it! Unlike the original QMB, I only made a dual-blower version of this as I figure if you're printing with extra heat, you're going to want the possibility of extra cooling. This was designed for the Ender 3. I don't know if it will fit an Ender 5 or a CR10 or not (I've heard parts are swappable, but don't have access to try). Please let me know the results if you test it on one! I designed this with several things in mind: 1. Forced air through the hotend heatsink. 2. No spillage of air from the heatsink to the part. 3. Larger openings for the part cooler ducts. 4. Blowers instead of fans. 5. Low noise. 6. Airflow to the part with a place to go. 7. Swappable/adjustable/removable duct nozzles. 8. Modular for different fan arrangements. 9. Open view of the nozzle for remote viewing 10. Good clearance from the heat-block. Backplate octolapse: https://youtu.be/ieJv_NF62Cg Front housing octolapse: https://youtu.be/Iz27TH-qa0U Duct nozzles octolapse: https://youtu.be/KrtulF2xaNU Things I may change / possible improvements: As mentioned above, I may create a shroud to quiet the fans even further. Right now they're quiet enough that I can't hear them over the obnoxious stock main-board fan or the power supply fan (upgrading those will come first). I may add a bit more clearance around the heatsink fins (but not at the top and bottom) to provide for a bit of air to bypass the fins (since they're so close together) allowing the 4010 blower to operate a bit more efficiently. It'll be interesting to see if it still cools as well (or better). I may experiment with and upload some more duct nozzles. Those are easy to swap and very economical to print.