Is this 3D model free to download?

Yes, Prusa i3 MK3 Noctua Extruder fan cover is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link to open the original listing by the creator.

Where do I download the STL file?

The download is hosted by Thingiverse. Use the "Download from Thingiverse" link on this page to open the original listing and grab the file, or save it to your print queue in the free Thinger app.

Designed by Petclaud, published on Thingiverse. Please credit the creator when sharing your print.

Can I print this at home?

Yes. This is a printable 3D model intended for home FDM and resin printers. Check the original listing for suggested print settings.

Prusa i3 MK3 Noctua Extruder fan cover

Source: Thingiverse by Petclaud

The Prusa i3 MK3 Noctua Extruder fan cover is a free printable 3D model from Thingiverse by Petclaud. JKSniper made a very nice Noctua fan upgrade for the MK2. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

48 saves Source: Thingiverse Updated 2026-10-07

Tags: Prusa, i3, MK3, Noctua, Extruder, fan, cover

About this model

JKSniper made a very nice Noctua fan upgrade for the MK2. The new MK3 is already provided with a Noctua fan by Prusa which is great because the fan is really silent. However.... that color!!!! Wow... Anyhow, time for a cover. Due to the new construction / design of printer and extruder, the Noctua extruder cooling fan comes really close to the left Z-rod so there is not much space.Taken the Noctua cover from JKSniper as a starting point I have adapted it to fit the MK3 and such that it does not touch the Z-rod. Installation: You need to take out just two M3 bolts/screws of the Noctua fan (the top and bottom bolts at the front) and leave the rear top and bottom bolts in place. The cover has some notches that will "snap" into the rear bolt heads and the front is kept in place by the M3 bolts…

Frequently asked questions

Is this 3D model free to download?: Yes. Prusa i3 MK3 Noctua Extruder fan cover is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link 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 Petclaud.
Who made this model?: Designed by Petclaud, 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.