Magnetic Stirrer

Magnetic Stirrer

prusaprinters

<p>Update 04/08/2020: I finally got around to installing a PWM for speed control. It works as expected, and I'm very happy with it. So far I have been using it for mixing Calcium and Alkalinity solutions for my marine aquarium as well as for starting yeast cultures for home brewing. A heated plate would probably be better but I haven't had any problems with just using water at 30 C and letting the stirrer do the rest.</p> <p>Assembly video: <a href="https://youtu.be/ugCic-LoJRo">https://youtu.be/ugCic-LoJRo</a></p> <p>Magnetic stirrer v1<br/> It works using a 12V 120mm/ 25mm PC fan to which I glued the “Magnet Disk” and inserted two magnets into. Magnets are 8mm wide and 10mm tall.<br/> At the moment I’m running it of a lab power supply at 5V as the fan spins too fast at 12V and my stir bar can’t keep up with it.<br/> I have included 3 different sized disks with my design as the distance between the two magnets used depends on the stir bar size. I am using disk 3 with the magnets inserted in the two closest holes and it works with stir bars between 25 and 35 mm.<br/> You will also need 4x M4* 40mm long bolts and corresponding nuts to hold it all together.</p> <h3>Print instructions</h3><h3>Category: DIY Summary</h3> <p>Update 04/08/2020: I finally got around to installing a PWM for speed control. It works as expected, and I'm very happy with it. So far I have been using it for mixing Calcium and Alkalinity solutions for my marine aquarium as well as for starting yeast cultures for home brewing. A heated plate would probably be better but I haven't had any problems with just using water at 30 C and letting the stirrer do the rest.</p> <p>Assembly video: <a href="https://youtu.be/ugCic-LoJRo">https://youtu.be/ugCic-LoJRo</a></p> <p>Magnetic stirrer v1<br/> It works using a 12V 120mm/ 25mm PC fan to which I glued the “Magnet Disk” and inserted two magnets into. Magnets are 8mm wide and 10mm tall.<br/> At the moment I’m running it of a lab power supply at 5V as the fan spins too fast at 12V and my stir bar can’t keep up with it.<br/> I have included 3 different sized disks with my design as the distance between the two magnets used depends on the stir bar size. I am using disk 3 with the magnets inserted in the two closest holes and it works with stir bars between 25 and 35 mm.<br/> You will also need 4x M4* 40mm long bolts and corresponding nuts to hold it all together.</p> <h3> Print Settings</h3> <p><strong>Printer Brand:</strong></p> <p>XYZprinting</p> <p><p class="detail-setting printer"><strong>Printer: </strong> <div><p>da Vinci mini w</p>&lt;/div&gt;<strong>Rafts:</strong></div></p> <p>No</p> <p><p class="detail-setting supports"><strong>Supports: </strong> <div><p>Yes</p>&lt;/div&gt;<strong>Resolution:</strong></div></p> <p>0.3</p> <p><p class="detail-setting infill"><strong>Infill: </strong> <div><p>20%</p>&lt;/div&gt;<br/> <strong>Filament:</strong><br/> Mix of different brands PLA and TPU for the feet Mixed</div></p></p></p></p>

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