It's difficult to get hold of the 9/32 bearings in the UK so I've been using metric 7mm alternatives. This design seems to be very particular on the weight of the balls in order for the looping to work. It may be that the 7mm balls I have are not pure stainless (so are lighter) but they all fall out of the top of the loop.
I tried a couple of times to contact OUT OF MARBLES to let them know that I was unable to open the Zip files that were sent but there was never a reply. I have already printed the base and have everything here to finish the project but I cannot open the files and then the files expired, so I could not try another any others. I am using CURA Stl. only and THINGIVERS on all my prints but I do have more to learn.
Really nice pattern. Had no problems printing without supports.
The Module printed nicely with little to none clean up. The action is fast and mesmerizing. This was a enjoyable project for my printer.