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ORNL's Bogdan Dryzhakov holds 10 of the world's smallest fidget spinners, measuring one tenth of a millimeter, made with one drop of liquid and a cutting-edge laser 3D-printer.

He created the Kinetic Driver, a fidget spinner precision screwdriver designed ... It uses 4 mm precision bits, so its utility will be limited to small screws, which makes it perfect for working ...