Extruder Motor Cooler MK3S/+

prusaprinters

<p>This is a <strong>remix </strong>of this:</p><p>https://www.prusaprinters.org/prints/72931-extruder-motor-cooler-mk3s-by-simonpk</p><p>where I have added threads for the PTFE-tube mount as I didn't want to glue it on.</p><p>The reason I wanted an extruder motor cooler is due to my printer being in an enclosure and when printing with ironing it caused the gears to chew through the filament, causing a clog in the PTFE-tube.</p><p><strong>Threads:</strong><br>The threads<strong> </strong>are M6x0.8.</p><p><strong>Fan:</strong><br>It is made for the <strong>Noctua A4x10 fan</strong>.&nbsp;</p><p><strong>Connection:</strong><br>Here I would recommend cutting the cables and crimping a connector to them as I have done in one of the images. This will make 2 things possible:<br>1) You can quick release the extruder cooler and take it off, it would be really annoying to undo everything each time.<br>2) You can have thinner cables to route through the sleeve.&nbsp;<br><br>Another reason that you might want to have thinner cables is that the thick cable from the Noctua fan gets squeezed between the extruder and the frame when at max Z height.</p><p>The fan is then connected in parallel to the left cooler fan. Since the fans draw around 50mA each this should be fine. I also have a third fan wired up in parallel to these too, so it should be fine. Note that the startup current is higher than the continuous draw, but 2-3 fans in parallel should be fine. I have 3 fans, but I take no responsibility for any damages.<br>The reason it is connected to the left cooler fan is that I don't want it on at all times, only when actually printing.</p><p><strong>Printing:</strong><br>I recommend printing it standing on its nose and having supports everywhere. You could probably paint them on, but I'm lazy. &nbsp;This made for easier removal of the supports than printing it laying down.</p><p>Layer height: 0.2mm<br>Supports: Everywhere<br>Material: PETG is recommended, &nbsp;but PLA might work.</p>