Bearing Tensioner Remixed!

The tensioner is a new idea to reach higher speeds by making sure the belts can never skip off the pulleys. It uses a rollerskate bearing – you’ve seen them in fidget spinners – and is 3D printed. Jason Garber remixed and improved the design, which delights me to no end.

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He said the middle pieces (2mm bend) is the his favorite. Here it is in action on Jason’s machine: