Is this 3D model free to download?

Yes, Humanoid Robotic Torso PROTO1 is free to download from MyMiniFactory. Open it in the free Thinger app, or use the "Download from MyMiniFactory" link to open the original listing by the creator.

Where do I download the STL file?

The download is hosted by MyMiniFactory. Use the "Download from MyMiniFactory" 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 Ryan Gross, published on MyMiniFactory. 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.

Humanoid Robotic Torso PROTO1 3D printable model by Ryan Gross

Humanoid Robotic Torso PROTO1

Source: MyMiniFactory by Ryan Gross

The Humanoid Robotic Torso PROTO1 is a free printable 3D model from MyMiniFactory by Ryan Gross. UPDATED 12/30/2018 This is a project that I have been working on for 3 years now. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from MyMiniFactory

366 saves Source: MyMiniFactory Updated 2026-11-04

Tags: hand, robot, arm, move, Robotics, humanoid

About this model

UPDATED 12/30/2018 This is a project that I have been working on for 3 years now. I've published other prototype robotic arms and prosthetics I've designed mainly as a hobby including my "Humanoid Robotic Hand" which was just the arm of Proto1. The publishing of the complete set of files for the robot has been long overdue, but I've published the first prototype of the robot here and gotten much-needed feedback through an amazing community. I designed this robotic arm to be affordable, simple, and innovative. The total cost is around $300 and doesn't require an absurd amount of work to assemble. The arm features a 3-axis shoulder to obtain full human motion. The elbow uses a large servo connected to it by a grooved belt (the same kind of belt used on most FDM 3D printers), the belt allows …

Frequently asked questions

Is this 3D model free to download?: Yes. Humanoid Robotic Torso PROTO1 is free to download from MyMiniFactory. Open it in the free Thinger app, or use the "Download from MyMiniFactory" link above to open the original listing.
Where is the STL hosted?: The download is hosted by MyMiniFactory, not by Thinger. We link you directly to the original listing by Ryan Gross.
Who made this model?: Designed by Ryan Gross, published on MyMiniFactory. 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.