D20 Roller

A delightfully over-engineered, click-clack alternative to a classic D20.All parts print as separate pieces—no supports, no glue—and can be taken apart later so you can rescue the bearing and magnets. I used generic PLA with a layer height of 0.16mm and a 0.4mm nozzle, Standard stuff. Required HardwarePartQtyNotes608 bearing1Ø22 mm × Ø8 mm × 7 mmNeodymium cube magnets225 mm × 5 mm × 5 mmAssemblyLoad the diskPress the 608 bearing into the center of Disk-Body.Drop 20 magnets into the numbered pockets, all poles facing the same way (left/right).Tip: a big helper magnet under the body keeps cubes from hopping out.Seal the diskAlign Disk-Cover with the body and twist clockwise—bayonet mount—until it locks, might not click.(Optional) PaintFill the numbers with acrylic paint (glow-in-the-dark looks amazing). Wipe excess before it dries.Build the platformSlide the two Platform-Walls onto Platform-Base.Snap the Platform-Snaps into the grooves on the inside of the walls (rounded side up).Press a