Is this 3D model free to download?

Yes, Slopeless marble run for Lego bricks 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 DiCon, 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.

Slopeless marble run for Lego bricks 3D printable model by DiCon

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Slopeless marble run for Lego bricks

Source: Thingiverse by DiCon

The Slopeless marble run for Lego bricks is a free printable 3D model from Thingiverse by DiCon. This is a marble run for Lego bricks, designed for 14mm ball bearings. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

30 saves Source: Thingiverse Updated 2026-10-29 License: CC-BY · commercial OK Category: Toys & Games

Tags: LEGO, lego compatible, marble, marble run, marble track, openscad, parametric

About this model

This is a marble run for Lego bricks, designed for 14mm ball bearings. The tracks are parametrically generated in OpenSCAD and are made up of five track types: - Straight (flat) - Straight (down) - Curve - Speed variation - End piece The marble run is designed to use no slopes that end up as staircases when 3D printed. Instead it uses rails with an increasing distance between them, so the marble runs down between the rails onto the next track. Aside from this, most pieces should be self-explanatory except for the speed variation piece. This changes the rail distance without lowering the center of mass for the marble, which changes the ratio of translational and rotational energy. In other words: The marble slows down momentary and then returns to its original speed. Well, almost. Friction …

Frequently asked questions

Is this 3D model free to download?: Yes. Slopeless marble run for Lego bricks 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 DiCon.
Who made this model?: Designed by DiCon, 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.