This is a small lazy susan that might be helpful while working on small art projects. The platform is 75mm in diameter. The top and bottom snap together. I used air soft pellets for the bearings. It would be smoother with 6mm steel bearings but that may also make it rotate too freely. This probably will not scale due to part tolerances and bearing race sizing. I used 10% density supports under the bottom and supports on the overhanging portions of the tabs.