Mablevator, Keychain

"Marblevator, Keychain" is perhaps the simplest of all my Marblevator designs. Consisting of a single 3D printed in place Marblevator and a single 4mm diameter ball bearing, this Marblevator is "keychain" ready in a few simple steps. As usual I probably forgot a file or two or who knows what else, so if you have any questions, please do not hesitate to ask as I do make plenty of mistakes. Designed using Autodesk Fusion 360, sliced using Ultimaker Cura 4.12.1, and 3D printed in PLA on Ultimak