Marble run pieces

I love marble runs. I found a really nice set of adapters for Q-Ba-Maze 2.0 to a different marble run set (by user mleotta), and I created this to fit with those adapters (I don't have the other marble run set). Then I started adding more things. I looked at other marble run sets here but didn't find any that seem to work together, although there are some really cool stunts. I'm gradually building up the stunt collection. Files are updated on Github more frequently than here at https://github.com/hgroover/papergeek-designs/tree/master/toys

These are all meant to work with the 11.125mm (7/16") marbles used by Q-Ba-Maze 2.0. If you need to get marbles, just search for 7/16 inch bearings on Amazon.

The whirlpool is the only real "stunt" piece here. There are two drop connectors and also a set of PVC adapters to work with US 0.75" PVC pipe (I recommend the thinner variety, used for low-pressure applications, as it's less heavy). (Updated 08-Oct-2020: added supports for bowl; dangling