Ender 3 4020 Fan Housing

prusaprinters

<h3>4020 Axial Fan Cover</h3> <hr/> <p>This part is based on the stock fan cover, but allows the use of a 4020 axial fan on Ender 3 and maybe other Creality printers. My original fan died after a couple of weeks. I'm now using a Sunon MagLev 40x40x20 fan which moves plenty of air and runs smooth and quietly, but wouldn't fit using the original fan cover.</p> <p>I designed this in multiple parts to avoid the need for supports. Print with the fan intake hole down. Be sure to print the left bracket with a flat side down.</p> <p>I left the intake hole open. You could mount a wire fan guard either by using longer M4 screws then mount the guard on the protruding ends of the M4 screws using locknuts, or by using 2 shorter M4 going into the unused fan mounting holes from the outside.</p> <p>Parts needed:</p> <ul> <li>2-4 M4 x 25mm screws for mounting the 4020 fan. (I only use 2.)</li> <li>4 M3 x 8-10MM screws.</li> <li>The original 2 M3 fan cover mounting screws or 2 more M3 x 6mm.</li> <li>The original 4 part cooling fan screws or 4 M2 socket cap screws. I believe the stock screws are 2 8mm at the top and 2 10mm at the bottom (where the duct mounts).</li> </ul> <p>Assembly:</p> <ol> <li>Mount the top bracket to the fan housing using 2 M3 screws.</li> <li>Mount the left bracket to the fan housing using the 2 stock M3 cover mounting screws or your own M3 screws.</li> <li>If the screw holes are tight you may get bulges around them where the housing mounts to the metal bracket. If so, trim them and any other bumps using a razor of a file, so that the housing will mount flush with the bracket.</li> <li>Do the following 2 steps in whatever order works best for you. I Installed an inline connector for my 4020 fan, so I install it first and then plug it in as the last step.</li> <li>Mount the 4020 fan into the fan housing. Make sure it is oriented so that it blows inward.</li> <li>Mount the stock part cooling fan (don't forget its 90° duct) to the right side of the fan housing. You could also do this after mounting the housing to the printer, but my wires are long enough that I can do this with the fan housing laying on the bed.</li> <li>Mount the fan housing using M3 screws.</li> </ol> <h3>Print Settings</h3> <p><strong>Printer Brand:</strong></p> <p>Creality</p> <p class="detail-setting printer"><strong>Printer: </strong> <div><p>Ender 3</p></div> <p><strong>Rafts:</strong></p> <p>No</p> <p class="detail-setting supports"><strong>Supports: </strong> <div><p>No</p></div> <p><strong>Resolution:</strong></p> <p>0.2</p> <p class="detail-setting infill"><strong>Infill: </strong> <div><p>80%</p></div> <p><strong>Notes:</strong></p> <p>I use 6-8 walls and 3 layers top and bottom.</p> </p></p></p> Category: 3D Printers