Spirale for a marble run

Spiral Track, Here are some spiral tracks for a marble run.There are 3 different models with different count of starts and the spirals have one turn of 360 degrees.In the Video you can see a double spiral with 2 marbles going through parallel. double spiral triple spiralFor each spiral exists one support part.Load the track-model and the support-model into your slicer.Locate both models manually to the centre of your print bed. (both have the same coordinates)The support-model is designed with no gap, so in the slicer it have to be moved in Z direction about -0.2 to -0.4mm. (down)Now there is a gap between the support-model and the track-model of 0.2 to 0.4mm.The support part is printed as "normal model"The model is customized, so other heights could be realized. (see list)If there is some need, write a comment and I will upload the STL files.Update 20.12.2019:In my slicer program not every track model was concentrical with the support model.So I made a circle around both model