3KU Printer Blower / Fan diffuser - UPDATED

thingiverse

This is an upgrade to my previous design (https://www.thingiverse.com/thing:1969903) that allows for a large airflow to be directed around 360 degrees of the hot-end, making it ideal for bridging and fast printing. The fan mounts on one of the carriages with the fan positioned outside the build area. Note that the flexible pipe passes between the "fixed" GT2 belt and the 8mm rod closest to the belt, ensuring the pipe and the GT2 belt remain stationary relative to each other. All bolts are M3, except for the one securing the fan, which is M4 in size. The fan used can be found at: https://www.aliexpress.com/item/Free-Shipping-Original-Delta-BFB0712H-7530-DC-12V-0-36A-projector-blower-centrifugal-fan-cooling-fan/32453609963.html I employed a low-cost flexible pipe from a hand pump/syphon for this project. This upgrade has been incredibly useful, and I'm confident you will find it beneficial as well. Thanks, Douglas