Crokinole 20s Tube Plug - Mayday 2020 Kickstarter

Love the little tubes for the 20s discs, but found that it was way too easy for the discs to end up not flat at the bottom of the tube, so I sketched up something real quick. Shouldn't need any supports and low infill, as these aren't doing any heavy lifting. In the pictures you can see that I have these a little lower than original cutout in the tubes. Doing so allows you to fit 8 discs into each tube and they're still plenty steady on the edges of the board. They're just wedge fit in there and hold pretty well.

These were designed for use with the tubes from the 2020 Mayday Crokinole Kickstarter, which have ~36mm inner diameter. They should work for other tubes, too, but may need scaling for whatever their inner diameter is.