Fully 3D Printed Bike Chain Gear Fidget Toy/Spinner

prusaprinters

<p>This is my take on a fidget toy I saw online. It is easy to print, even with bad printers, requires no support and works without lubrication.</p><p><strong>Parts list:</strong></p><ul><li>15 chain links (can be printed together or individually)</li><li>A 10-tooth sprocket with rotating bearing (print-in-place)</li><li>A 7-tooth sprocket with rotating bearing (print-in-place)</li><li>2 chain spinner arms</li><li>2 large caps</li><li>2 small caps</li></ul><p><strong>Print Instructions:</strong></p><p>Every part should be printed without supports.</p><p>There are TWO different clearances for the sprockets, 0.225 in and 0.15 inches. The large clearance should work for all printers.</p><p>The arms have a slight raised edges around the holes on one side so make sure that it is printed in the correct orientation.</p><p>&nbsp;</p><p><strong>Post- Processing and Assembly:</strong></p><p>Note: The chains may require some light sanding to get it to move freely</p><p>Assemble the sprockets first. Line up the arms with the corresponding sprockets. Use the Caps to snap the pieces together. Then wrap the chain around and connect the ends together.</p><p><strong>Other Notes:</strong></p><ul><li>It can be printed at .28mm layer height</li><li>I have had success down to 85% scale</li></ul>