Ender 3 S1 Hotend Fan 4020 Replacement Bracket

prusaprinters

<p>The Ender 3 S1 has been a great machine so far except for the loud hotend fan. &nbsp;I had a spare 4020 blower fan so I designed this bracket to replace the one found on the sprite extruder. &nbsp;Even at 100% I've found it to be quieter than stock, but was able to reduce it to 50% fan speed for even quieter performance while still maintaining proper cooling.</p><p>You will need the following hardware:</p><p>4020 blower fan - Fan that I used https://amzn.to/3GdBhSI</p><p>3 x M3 16mm screws to mount the fan</p><p>You will also need to get the old fan's JST connector onto the new fan. &nbsp;I simply clipped and soldered the cables.</p><p>It prints in 2 parts and supports are not needed. &nbsp;After securing the bracket be sure to tuck the cables to allow the x limit switch to trigger. I'd recommend manually testing the triggering of the switch prior to homing. &nbsp;The small clip at the bottom of the probe mount is to tuck the part cooling fan cable if needed.</p><p>Fan noise comparison video:&nbsp;</p><figure class="media"><oembed url="https://youtu.be/UiPyqhP7mUY"></oembed></figure><p>&nbsp;</p><p>20/05/2022 - Moved the probe mount up 2mm since it seemed unnecessarily close to the bed when stowed.</p>