Is this 3D model free to download?

Yes, Multicolor Un-Manufacturable Part 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 mathgrrl, 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.

Multicolor Un-Manufacturable Part 3D printable model by mathgrrl

Multicolor Un-Manufacturable Part photo 1

Multicolor Un-Manufacturable Part photo 2

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Multicolor Un-Manufacturable Part

Source: Thingiverse by mathgrrl

The Multicolor Un-Manufacturable Part is a free printable 3D model from Thingiverse by mathgrrl. This print-in-place impossible screw has two interlocking pieces that twist freely but cannot come apart! A great example of an object that can be made with layer-by-layer 3D. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

267 saves Source: Thingiverse Updated 2026-10-13 License: CC-BY-SA · commercial OK 4 makes Category: 3D Printer

Tags: amazing, engineering, example, full color, gift, impossible, machine tools, Multicolor, replicator 2, screw, twist, Two Color, ultimaker 3, un-manufacturable, unbelievable

About this model

This print-in-place impossible screw has two interlocking pieces that twist freely but cannot come apart! A great example of an object that can be made with layer-by-layer 3D printing, but not with traditional manufacturing methods. Check it out in this video: The model is a remix of TheKre8Group's elegantly mind-bending Un-Manufacturable Part. We increased the clearance between the two parts, elongated the interior part with an extra twist, and added color to the inside twist for printing on full color 3D printers. We printed ours on the new XYZ da Vinci Color. The downloadable files also include models to use with dual-extrusion 3D printers and regular single-extrusion printers. Modifying models to print in color has turned out be difficult with a capital D. For the full color model we u…

Frequently asked questions

Is this 3D model free to download?: Yes. Multicolor Un-Manufacturable Part 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 mathgrrl.
Who made this model?: Designed by mathgrrl, 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.