Fidget Spinner 80mm Fan

prusaprinters

<p>My take on a fidget spinner mash-up with a fan. I wanted something that would also be of potential functionality and value. While not as effective as a high RPM electric fan it's just as good as most personal hand fans.</p> <p>When using the fan one will find the airflow is cone shaped and spreads out at a 45-60 degree angle from the fan. Rotating it as it spins also helps with feeling the air moving as you can experience the slight push and pull as it passes.</p> <p>Video: <a href="https://youtu.be/J5-Jdm_CLOE">https://youtu.be/J5-Jdm\_CLOE</a></p> <p>I designed this to be held in the right hand and spun with the left. It was just comfortable for me that way and was how I noticed my kids holding fans. Since fans only work in one direction you'll need to use the mirror along axis feature (x or y), available in most slicing engines, to use it in the left hand.</p> <h3> Print Settings</h3> <p><strong>Printer Brand:</strong></p> <p>Prusa</p> <p><p class="detail-setting printer"><strong>Printer: </strong> <div><p>Prusa Mk2</p></div><strong>Rafts:</strong></p> <p>Doesn't Matter</p> <p><p class="detail-setting supports"><strong>Supports: </strong> <div><p>Yes</p></div><strong>Resolution:</strong></p> <p>.1mm</p> <p><p class="detail-setting infill"><strong>Infill: </strong> <div><p>20%</p></div></p> <p><strong>Notes:</strong></p> <p>To get the fan blades nice a high resolution is required. Make sure to tune your supports as they will be difficult to remove without breaking the blades if they stick.</p> <h3> Post-Printing</h3> <p><strong>1/4-20 Hex weights</strong></p> <p><div><p>I opted to use 1/4-20 nuts as weights. I've uploaded the CAD file if one should wish to alter the type. They should be a nice fit but occasionally, due to inconsistent printing and/or surface finishing of the nuts by the manufacturer, they can be too big or small.</p> For the too small I recommend a few drops of super glue and using the Hex caps to seal the nuts in.</div></p> <p>For the too large either heat the nut in some hot to boiling water (80-100 C) and press it in (works well for PLA), file away some of the plastic, or press in and hope it doesn't crack the frame.</p> <h3> How I Designed This</h3> <p><strong>Design</strong></p> <p>Designed in Solidworks with 5 iterations. First I attempted to optimize for 3D printing on a single material/nozzle machine; the result of which produced almost no displacement of air.</p> <p>After that I worked to improve airflow.</p> </p></p></p> Category: Toys &amp; Games