Spinning Triple/Quadruple Ball Bearings

I was requested by a friend of mine to modify my original double bearings to add more layers/rings to it. It may not work as well as the double bearings, so please post feedback on how these ones print on your printers so I can make adjustments ac...

Tags: balls ball bearings bearings mechanical mechanical toys spinning toys

Link: http://www.thingiverse.com/thing:51806

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