Is this 3D model free to download?

Yes, N: Spiral loop AddOn for Unitrack and Viaducts is free to download from Cults3D. Open it in the free Thinger app, or use the "Download from Cults3D" link to open the original listing by the creator.

Where do I download the STL file?

The download is hosted by Cults3D. Use the "Download from Cults3D" 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 Slanjonok, published on Cults3D. 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.

N: Spiral loop AddOn for Unitrack and Viaducts 3D printable model by Slanjonok

N: Spiral loop AddOn for Unitrack and Viaducts photo 1

N: Spiral loop AddOn for Unitrack and Viaducts

Source: Cults3D by Slanjonok

The N: Spiral loop AddOn for Unitrack and Viaducts is a free printable 3D model from Cults3D by Slanjonok. This is an AddOn to my universal, stackable Piers for Unitrack & Viaducts: to create spiral loop or helix tracks. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Cults3D

30 saves Source: Cults3D Updated 2026-10-14 License: CC-BY-NC-SA · non-commercial Category: Toys & Games

Tags: modelrailway, modelrailroad, modeltrains, nscale, kato, viaduct, unitrack

About this model

This is an AddOn to my universal, stackable Piers for Unitrack & Viaducts: to create spiral loop or helix tracks. There are versions for viaduct tracks (works with original KATO viaducts as well as my DIY-viaducts in both KATO-compatible version), as well as for the wider version of viaducts. It took a while to create and some test prints until it worked, but it was fun. Hope someone else has use of it. Would be happy to see your use…. Have fun! Please note: “Kato” and “Unitrack” are trademarks of K.K. Sekisui Kinzoku, Japan. All trademarks are used for reference only. The design presented here is neither supported nor authorised by the before mentioned trademark holder(s). Please note the license: My design is published under the CC BY-NC-SA license, which means that you can freely use th…

Frequently asked questions

Is this 3D model free to download?: Yes. N: Spiral loop AddOn for Unitrack and Viaducts is free to download from Cults3D. Open it in the free Thinger app, or use the "Download from Cults3D" link above to open the original listing.
Where is the STL hosted?: The download is hosted by Cults3D, not by Thinger. We link you directly to the original listing by Slanjonok.
Who made this model?: Designed by Slanjonok, published on Cults3D. 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.