About this 3D model
A little project I made for a school fundraiser. The spinners are a bit too big for smaller kids to "pinch hold" while spinning, and the lack of significant weight (together with high-drag shapes) means spin times are unimpressive, but hopefully the cute look still makes them a fair mini-gift. Painting small color details with enamel modelling paint adds a finished touch. Designed to print with 0.25mm layers. Other thicknesses won't fit together quite so well. Also, I recommend printing at 100% infill to maximize the weight. You may need to scale up or down 1% or so to fit your bearings, depending on your printer's tolerance. If you print parts in white, green, and red plastic, I reckon there are 8100 possible combinations. Uses standard 608 ball bearings. BTW, anyone interested in producing these commercially, I'm open to licensing.