Ender 3/CR-10 Direct Drive Bullseye Duct Clone

thingiverse

This is my clone of the great Bullseye fan duct for the Ender 3/CR-10, designed specifically for direct drive extruders which place the extruder stepper directly above the hotend parallel with the Y axis. If you've struggled to fit a Bullseye duct to a direct drive setup like this and found that your part cooling fan interferes with the stepper motor, this is a possible solution for you. This design utilizes the stock part cooling fan and the Bullseye mount that can be found here: https://www.thingiverse.com/thing:2759439 For use with direct drive setups similar to the one found on Amazon at this link: https://www.amazon.com/Printer-Extruder-Flexible-Filament-Creality/dp/B0824ZQ3D1/ref=sr_1_3?dchild=1&keywords=ender+3+direct+drive&qid=1591907666&sr=8-3 Print using the settings found on the original Bullseye - orient fan duct outlets to the bottom of the build plate, use supports from the build plate only. This will prevent supports from getting stuck inside the duct after the print is completed. Install this clone using the height guidelines included with the original Bullseye. I've made a first attempt at cloning a fan duct and am very happy with its performance. However, when moving to a direct drive setup like the one I chose, the original Bullseye doesn't fit. If you don't have this particular direct drive setup, I recommend using the original Bullseye instead. My clone is crude by comparison and hasn't been optimized for airflow analysis to eliminate turbulence and provide an efficient cooling system like the designer of the original.