Is this 3D model free to download?

Yes, Functional bearing with steal BB gun balls 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 PiratDuck, 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.

Functional bearing with steal BB gun balls 3D printable model by PiratDuck

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Functional bearing with steal BB gun balls

Source: Thingiverse by PiratDuck

The Functional bearing with steal BB gun balls is a free printable 3D model from Thingiverse by PiratDuck. Made fully functional bearings made out of PLA and some 3.5mm steal BB gun balls. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

253 saves Source: Thingiverse Updated 2026-11-04 License: CC-BY · commercial OK Category: Toys & Games

Tags: airsoft, balls, BB balls, bb gun, bearing, fidget, functional, snapmaker, steal balls

About this model

Made fully functional bearings made out of PLA and some 3.5mm steal BB gun balls. I guess plastic BB gun balls will also work for this. There is two sizes of the bearing that uses either 3.5mm or 4.3mm balls. And for each size I have one with less tighter tolerances for really rigid PLA and one with tight tolerances for more elastic PLA. This is due to when squeezing in the balls the more rigid PLA could crack. Check out how well they spinn: Print without supports, 0.1mm layer height and random Z seam for optimal results. (I used both generic PLA for the rigid version and eSun PLA+ for the elastic version). Recommended items needed: 11x steal BB gun balls 1x small polygrip or similar (Optional) tiny amount of grease Tip if you want updates or modifications

Frequently asked questions

Is this 3D model free to download?: Yes. Functional bearing with steal BB gun balls 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 PiratDuck.
Who made this model?: Designed by PiratDuck, 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.