Is this 3D model free to download?

Yes, Modular Toy Robot Arm 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 Troy Mackay, 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.

Modular Toy Robot Arm

Source: MyMiniFactory by Troy Mackay

The Modular Toy Robot Arm is a free printable 3D model from MyMiniFactory by Troy Mackay. Following on from my first toy robot arm, this one is a bit more modular and can be used as a toy, desk lamp, microphone or camera stand via swappable add-on components. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from MyMiniFactory

30 saves Source: MyMiniFactory Updated 2026-09-16

Tags: lamp, modular, openscad, robot, stand, toy, gear, arm, construction, planetary, Epicyclic

About this model

Following on from my first toy robot arm, this one is a bit more modular and can be used as a toy, desk lamp, microphone or camera stand via swappable add-on components. More components to come. (OpenSCAD Source) Print at 0.2mm layer height and ensure there is a 1-layer gap in the ring gears after slicing. Use a sharp edge to de-laminate the 1-layer gaps (listen for the "crack"). Turn the knob just a little to get the gears moving, working back and forth gently. A final tap with a rubber mallet should free everything up. Then apply petroleum jelly or lubricant of choice to gears.

Frequently asked questions

Is this 3D model free to download?: Yes. Modular Toy Robot Arm 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 Troy Mackay.
Who made this model?: Designed by Troy Mackay, 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.