Hello,
I thought about a "ZigZag Loop" for our marble run and had some time...
The ring is only needed 2 times, only for the 2 bottom parts.
I don't glue them in, only stack together.
Maybe you have to scale the ring a little bit, so it fit into the bottom plate.
Video 1
Update 23.08.20: Added some more tiles, if someone can use them.
Video 2
Update 10.02.21: Added 5mm higher tiles. ("H" for "high", in the name), the rail get a little bit steeper, and the marble got more speed, so they couldn't stuck so easily
Update 10.07.22: Addes some support bridges to stabilize the system.
Video
MK_Design
