Is this 3D model free to download?

Yes, Proton - Open Source 3D Printer 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 layerone, 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.

Proton - Open Source 3D Printer 3D printable model by layerone

Proton - Open Source 3D Printer

Source: Thingiverse by layerone

The Proton - Open Source 3D Printer is a free printable 3D model from Thingiverse by layerone. Proton is one of two open source 3D printers designed by Layer One, the creator of Atom 3D Printers (Link to Neutron: While the RepRap project produced some functional printers. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

1,435 saves Source: Thingiverse Updated 2026-10-22 License: CC-BY-SA · commercial OK 1 makes Category: 3D Printer

Tags: 3dprinter, atom, ATOM25, atom25EX, neutron, opensource, proton, reprap

About this model

Proton is one of two open source 3D printers designed by Layer One, the creator of Atom 3D Printers (Link to Neutron: While the RepRap project produced some functional printers, it was clear that nobody had intended to produce something for the desktop of the discerning designer. That’s where Layer One’s Proton and Neutron come in. If you're an open-source advocate, a tinkerer, and a designer with an eye for aesthetics, you’ll want one of these on your desk. All the printed parts of the printer is right here. Proton was built in OnShape. Log in to remix your own version of Proton, it's free as long as you share what you have made. Visit our website for the BOM, CAD files, assembly guide and everything else. Proton website: BOM: --------------------------------------------------------- Atom…

Frequently asked questions

Is this 3D model free to download?: Yes. Proton - Open Source 3D Printer 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 layerone.
Who made this model?: Designed by layerone, 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.