QMB Ender 3 hot-end and part cooler

thingiverse

This appears to be a Thingiverse post describing a custom cooler design for 3D printing, specifically for the Ender 3 printer. The author has created multiple versions of the cooler, including single and dual-blower front housing designs, as well as various duct nozzle options. The post includes links to YouTube videos demonstrating the octolapse capabilities of each version, showcasing the print quality and cooling performance. The author mentions potential future improvements, such as adding a shroud to quiet the fans further, increasing clearance around the heatsink fins for better airflow, or adding aesthetic tweaks to the single-blower front housing. They also mention experimenting with different duct nozzles and possibly creating a remix/variant of the design for use with an all-metal hotend. Overall, this post appears to be a comprehensive documentation of a custom cooler design for 3D printing, including multiple versions and potential future improvements.