200mm PC Fan Desktop Fan

prusaprinters

<p>Summer is coming.</p><p>My office is getting hot.</p><p>I had a spare 200mm Phanteks PC case fan and decided use it as a desktop fan.</p><p>I have previously designed and printed some “feet” (https://www.thingiverse.com/thing:4515078) to angle the fan just enough for desktop use, but I was not satisfied with this solution, so I have designed a full desktop fan with adjustable angle.</p><p>I use a USB to 12v converter to drive the fan at 12v. When driven at 5v it is not powerful enough to create a cooling breeze. Something like this: <a href="https://www.amazon.co.uk/12V-Voltage-Step-Converter-Cable-5V/dp/B07J6NYVJV">https://www.amazon.co.uk/12V-Voltage-Step-Converter-Cable-5V/dp/B07J6NYVJV</a>. This also allows to use the fan with a USB power bank. You can also use any 12 power supply.</p><p>In addition to printed parts you will need:</p><ul><li>1 x 200mm 12v case fan - e.g a Phanteks - <a href="https://www.amazon.co.uk/Phanteks-PH-F200SP_BK-F200SP-200mm-Fan/dp/B00NC08E9Y)">https://www.amazon.co.uk/Phanteks-PH-F200SP_BK-F200SP-200mm-Fan/dp/B00NC08E9Y)</a>. This is nice fan that is pretty much silent and moves just enough air to create a cooling breeze.&nbsp;</li><li>2 x M4 x 18mm cap screws to secure the fan surrounds to the gantry (M4 x 20mm would be fine)</li><li>2 x M4 nylock nuts to secure the fan surrounds to the gantry</li><li>6 x M4 washers to use as spacers between the gantry and the fan surrounds (3 each side)</li><li>4 x M4 x 40mm cap screws to secure the fan to the surrounds</li><li>4 x M4 nuts to secure the fan to the surrounds</li><li>1 x M4 x 18mm to secure the gantry to the pillar curtain (M4 x 20mm would be fine)</li><li>2 x M4 screws&nbsp;(or 1 x M4 nylock) to the gantry to the pillar curtain</li><li>Aluminium 20mm square profile for the pillar. Cut to preferred length based on desired fan height - mine is approx 25cm.<br><strong>Note</strong>: You may be able to use 2020 profile assuming you can add a M5 tap on center. You'll need to modify the pillar curtain for M5 rather than M4 cap screw. I have not tried this… you're on your own :)</li></ul><p><strong>Printing</strong></p><p>The largest part (gantry) <i>just </i>fits on an MK3s bed - rotate until you have a fit</p><p>Print settings I used were slight tweaks on the MK3s 0.3mm layer Draft profile:</p><ul><li>3 perimeters</li><li>5 top and bottom layers</li><li>10% infill for the fan surrounds, 20% for the rest</li></ul><p>For the fan surrounds supports are needed. I painted support blockers on the holes in the center, but allowed supports for the ends. For all other parts no support are needed.</p><p>Depending on the length of the piller print one or more of cable clips&nbsp;</p><p><strong>Assembly</strong></p><ol><li>Print all parts</li><li>Secure both fan surrounds to the gantry with the 18mm M4 cap screws, 3 x washer between the gantry and the fan surround and a nylock nut as captive nut on each side</li><li>Rotate the surrounds 90 degrees vs the gantry and insert the fan. Rotating the surrounds allow the flexibility of the gantry part to allow the fan to be inserted easily</li><li>Secure the fan with the M4 x 40mm cap screws and nuts</li><li>Insert M4 x 18mm cap screw through the base of the gantry and the end of the pillar curtain. Secure with nut(s)</li><li>Insert the 20mm profile pillar into the base and the pillar curtain - its held with friction</li><li>Clip the cable to the piller with the cable clip(s)</li></ol>