Link to my video I've started working on a Monorail / Duorail implementation inspired by Nicholas Seward:s Monorail. I call it the Zipline, since it kind of looks like a monkey riding a zipline However, I'm not sure I've gotten the geometry correct. I know it should be three intersecting, in my circle demo in the video it appears that all axis are moving in sync with each others... The angleby sjostedtio - Look what I made!