N: Spiral loop AddOn for Unitrack and Viaducts

This is an AddOn to my universal, stackable Piers for Unitrack & Viaducts: https://www.thingiverse.com/thing:7353287 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 this model for any non-commercial purpose and may remix this model freely as long as you provide attribution and share with the same creative commons license. Feel free to contact me if any questions.