Is this 3D model free to download?

Yes, Centrifugal Compressor 120mm Case Fan Conversion 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 Kiolia, 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.

Centrifugal Compressor 120mm Case Fan Conversion 3D printable model by Kiolia

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Centrifugal Compressor 120mm Case Fan Conversion

Source: Thingiverse by Kiolia

The Centrifugal Compressor 120mm Case Fan Conversion is a free printable 3D model from Thingiverse by Kiolia. Conversion kit to transform a 120mm case fan (any with a hub in the neighborhood of 39-40mm diameter, which was all the spare ones I had floating around) into a centrifugal. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

1,115 saves Source: Thingiverse Updated 2026-10-11 License: CC-BY-NC · non-commercial 1 makes Category: 3D Printer

Tags: 120mm, 120mm fan, Blower, Blower fan, centrifugal fan, compressor, compressor turbine, fan

About this model

Conversion kit to transform a 120mm case fan (any with a hub in the neighborhood of 39-40mm diameter, which was all the spare ones I had floating around) into a centrifugal compressor with a double volute. 6.11.21 UPDATE: Finally, a smoke test video! 7.3.18 UPDATE: Added a second impeller base that should be able to accommodate fans with larger hubs (from ~42 to ~46mm, possibly up to 47mm with sanding). I haven't tested this base myself, but it's reported to work fine. It's taller than the original due to internal clearance needs, though, so you may need extra spacers of some kind to stand the diffuser far enough from the fan case. 5.27.21 UPDATE: Well, these units are still going strong on my machine -- although I have replaced the case fan motors once apiece on my two units. Fans with be…

Frequently asked questions

Is this 3D model free to download?: Yes. Centrifugal Compressor 120mm Case Fan Conversion 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 Kiolia.
Who made this model?: Designed by Kiolia, 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.