Mechanical Iris Fidget Toy

prusaprinters

<p>Wanted to play around with mechanical iris' so I designed this fidget toy. Their are four “blades” that cover up the center section but move out of the way when the knob on the toy is rotated.</p><p>&nbsp;</p><h3>Printing</h3><p>All models were designed to be printed without supports. In order to have the threaded base and cap mesh I tend to increase the layer height for those features. Outside of those features I used a 0.2mm layer height.</p><h3>Assembly</h3><ol><li>Place the “base” on a flat surface with the stubs facing up</li><li>Take one “blade” with the stub facing up and place it on one of the base's inner circle of stubs &nbsp;such that it does not overhang the center opening of the base.</li><li>Repeat step 2 for the other three blades</li><li>Carefully take the “activator” with the large single stub facing up and line it up with the stubs from the base and the blades.</li><li>Carefully twist the activator to verify that it rotates all the blades in unison. If you knock one of the blades off of it's stub remove the activator and repeat steps 2-4.</li><li>Take the “cap” with the flat side facing up and place it on top of the assembly. Twist the cap onto the threads of the base until it stops moving.</li><li>Again verify that the knob on the activator moves freely and is able to move the blades in unison. If not, loosen the cap slightly until it does.</li></ol>