People who know about bearings go through a phase of bemusement with regards to fidget spinners. We say something like, “man, I got a whole box of bearings in the basement.” Then we go through a “OK, ...
To create their 3-D printed spinners, the boys first designed the concept in a computer program that allows users to draw in 3-D. Then, the file was transported to another program that connects to the ...
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