Zuru - Hamster In A House - Track

3d Flies, kompatible with the "Zuru - Hamster In A House" Toys.
Like this one: https://www.amazon.de/Hamster-house-nbsp-6033593-Schienen-Set/dp/B01GG7KDJ8/ref=sr_1_12?ie=UTF8&qid=1528623753&sr=8-12&keywords=ZURU+Hamsters+in+a+House+Spielzeug

From one role of 0,6 KG filament, you can print about 36 straight tracks. ;-)

Here are the thinkercad files:
https://www.tinkercad.com/things/6fPEbLrgm2z
https://www.tinkercad.com/things/4X2YWL1toeq
https://www.tinkercad.com/things/9FTORMEVrXo

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