This 3D-printed Wave Tunnel for GraviTrax marble runs was built by the MarbleMania3D shop on Etsy. I received this part for free …
source
This 3D-printed Wave Tunnel for GraviTrax marble runs was built by the MarbleMania3D shop on Etsy. I received this part for free …
source
Nice plan-also where can I buy these 3d primed gravitrax add ons
Nice ideaπ€©π€©π