Magnetic fidget toy

prusaprinters

<p>This is a fun little magnetic toy that, when rotated, has these strokes of resistance as the magnets repel and attract each other. It is kinda like rotating a brushless electric motor, only stronger. It uses 24 5x3mm neodymium magnets, and 2 608ZZ ball bearings.</p><p>Two different models are included;</p><ul><li>the regular one with, what i would call, a pleasant amount of resistance.</li><li>A version where the magnets are situated closer to the edge which results in the resistance being stronger. Note, the magnet are slightly visible on this one when printing in a light colored plastic. They are completely hidden on the regular version.</li><li>(I have added a model with space for 6x3mm magnets)</li></ul><figure class="media"><oembed url="https://youtu.be/lMKqnw7PTTk"></oembed></figure><p>&nbsp;</p><h3>Print Settings</h3><p>&nbsp;</p><p><strong>Infill:</strong></p><p>100%</p><p><strong>Notes:&nbsp;</strong></p><p>To get the smoothest surface on the outside, the models should be printed with that surface facing up. note that the support is a bit tricky to remove when doing this.</p><p>Infill should be 100% to make the rod, which joins the bearings, strong enough.</p><p>&nbsp;</p><h3>Post-Printing</h3><p>When you've printed the models, remove the support if you've chosen to face them that way. The support can be tricky to remove (at least with my printer) but i ended up prying it away with a thin screwdriver.<br>Some of the magnets were a bit loose when i inserted them so a dab of super glue will do the trick</p><p>Both models require two 608ZZ bearings (the same bearings used in rollerblades). I made some early versions with only one bearing and both halfs kept scraping against each other, two seems to be the sweet spot.</p><p>You need 24 magnets (5x3mm) for one toy, 12 in each half.<br>You can buy 30 of these magnets for just €1. I found these cheap magnets to be of really high quality: <a href="https://www.aliexpress.com/item/32969476007.html?spm=a2g0s.9042311.0.0.78f04c4dCBNt6b">https://www.aliexpress.com/item/32969476007.html?spm=a2g0s.9042311.0.0.78f04c4dCBNt6b</a></p><p>It is important, when you install the magnets, that all of the same poles are facing the center, otherwise it will not work.</p><p>This picture shows how the magnets should be oriented in the assembly:</p><figure class="image image-style-align-center image_resized" style="width:50%;"><img src="https://media.prusaprinters.org/media/prints/95197/rich_content/f0422995-4914-458e-92d0-d3b2a3f8c985/magnet-orientation.png#%7B%22uuid%22%3A%221196fd31-cb30-449e-a00a-6fc48c1f1e4c%22%2C%22w%22%3A1929%2C%22h%22%3A1929%7D"></figure><p>&nbsp;</p><p>once assembled, the two half should not touch or scrape against each other. If they do try to pry it open and use a file to smoothen the surfaces that are close to each other.</p><p>&nbsp;</p><p>Category: Mechanical Toys</p>