Ender 3/CR-10 Direct Drive Bullseye Duct Clone 3D printable model by Sporktek

Ender 3/CR-10 Direct Drive Bullseye Duct Clone

Source: Thingiverse by Sporktek

The Ender 3/CR-10 Direct Drive Bullseye Duct Clone is a free printable 3D model from Thingiverse by Sporktek. This is my (bad) clone of the great Bullseye fan duct for the Ender 3/CR-10, for use with direct drive extruders which place the extruder stepper directly above the hotend. You can download the STL file from the original listing below and print it at home.

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30 saves Source: Thingiverse Updated 2026-05-05

Tags: Ender, 3/CR-10, Direct, Drive, Bullseye, Duct, Clone

About this model

This is my (bad) clone of the great Bullseye fan duct for the Ender 3/CR-10, for use with direct drive extruders which place the extruder stepper directly above the hotend parallel with the Y axis. If you've tried 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 uses the stock part cooling fan and the Bullseye mount that you can find here: For use with direct drive setups similar to the one found here: Print using the settings found on the original Bullseye - orient fan duct outlets to the bottom of the build plate, use supports, from build plate only (you don't want supports inside the duct that you can't clear after the print is completed). Install using the he…

Frequently asked questions

Is this 3D model free to download?
Yes. Ender 3/CR-10 Direct Drive Bullseye Duct Clone is free to download from Thingiverse. Click the "Download free STL" button above to open the original listing.
Where is the STL hosted?
The download is hosted by Thingiverse, not by Thinger. We link you directly to the original listing by Sporktek.
Who made this model?
Designed by Sporktek, published on Thingiverse. Please credit the creator when sharing your print online.
Can I print this at home?
Yes. This model is intended for home FDM and resin 3D printers. Check the original listing for suggested print settings like layer height and supports.

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