Holo top - easy to print spinning top(over 180s spinning)

prusaprinters

<figure class="media"><oembed url="https://youtu.be/RJlTkmiI8W8"></oembed></figure><p>This is a stable, long-running top.</p><p>The center of gravity is perfectly aligned(0.009mm) and technology has been incorporated to reduce aerodynamic drag.</p><p>!!Emergency Fix!!<br>Conventional rods are not properly toleranced.<br>I provide a modified version.</p><p>&nbsp;</p><h3>Perfect Balance</h3><figure class="image image-style-align-left image_resized" style="width:24.25%;"><img src="https://media.prusaprinters.org/media/prints/131100/rich_content/c23f0f1a-0e26-4c86-a465-490a95880ab4/001mm.png#%7B%22uuid%22%3A%22b9161ae8-e4d7-4d29-b1f5-b9c8cf535ff6%22%2C%22w%22%3A182%2C%22h%22%3A178%7D"></figure><p>&nbsp;</p><p>&nbsp;</p><p>&nbsp;</p><p>To provide perfect performance, the center of gravity is aligned to within 0.009mm.</p><p>&nbsp;</p><p>&nbsp;</p><p><img class="image_resized" style="width:22.02%;" src="https://cdn.thingiverse.com/assets/68/0d/8c/80/62/rod.png">Also, the rod is hollowed out for low-speed stability of the top.</p><p><img class="image_resized" style="width:45.38%;" src="https://cdn.thingiverse.com/assets/f2/ab/fc/61/33/steel_ball.jpg"></p><p>Moreover, to prevent warping, a 5mm(0.2"-not tested) steel ball was used instead of a print with errors.<br>It uses only one arm to minimize air resistance.</p><p>&nbsp;</p><h3>Stability</h3><figure class="image image-style-align-left image_resized" style="width:39.84%;"><img src="https://media.prusaprinters.org/media/prints/131100/rich_content/7d7ac129-647f-43f3-85fc-78368a489669/framevideo.gif#%7B%22uuid%22%3A%22383592ad-0833-4171-9808-d1e814e266eb%22%2C%22w%22%3A600%2C%22h%22%3A600%7D"></figure><p>&nbsp;</p><p>&nbsp;</p><p>&nbsp;</p><p>&nbsp;</p><p>&nbsp;</p><p>&nbsp;</p><p>&nbsp;</p><p>Thanks to the perfect alignment, the top is perfectly stationary and moves.</p><p>&nbsp;</p><h3>Notice</h3><ol><li>The rod can be 0.2-0.4mm (0.6 max) away from the rotor, this is normal.(Picture below)</li><li>Only use solid models if rods do not print properly! Solid rods reduce rotational stability.&nbsp;</li><li>Set the density to 100% but the number of walls to 2! More walls increase the difficulty of printing.</li><li>Happy printing:)</li></ol><p><img class="image-style-align-left image_resized" style="width:43.38%;" src="https://cdn.thingiverse.com/assets/ae/0d/57/60/50/not_bad.jpg"></p><p>&nbsp;</p>