Ender 3 Pro Motherboard / Mainboard cover for 120 x 25 mm (silent) arctic fan

thingiverse

**Modified on 08th June 2023** -- Version 2 -- - more stable - mountable with Ender 3 pro screws - added optional part 2 **Upload on 05th June 2023** -- Version 1 -- While looking for a low-cost alternative to Noctua fans, I came across Arctic fans. They are much more affordable compared to Noctua. The table below lists all the fans that came into question for me. My choice fell on the P12 Silent, because on the one hand they provide enough airflow and static pressure at a relatively low fan speed (important for the noise emission) and on the other hand they are the cheapest with about 5€ at the time of my selection. Since I prefer the 120mm P12 Silent fans and they are also installed in the PSU of my Ender 3 Pro, I designed this component for the motherboard unit upgrade. <table cellspacing="1" bgcolor="#aaaaaa" > <thead> <tr bgcolor="#fafafa"> <th width="170"></th> <th></th> <th align = "center" width="100">P8 Silent</th> <th align = "center" width="120" bgcolor="#fafffa">P12 Silent</th> <th align = "center" width="100">F8 Silent</th> <th align = "center" width="100">F9 Silent</th> <th align = "center" width="120">F12 Silent</th> </tr> </thead> <tbody> <tr bgcolor="#ffffff"> <td bgcolor="#fafafa" >Size </td> <td bgcolor="#fafafa">[mm]</td> <td align = "center">80x80x25</td> <td align = "center" bgcolor="#fafffa" >120x120x25</td> <td align = "center">80x80x25</td> <td align = "center">92x92x25</td> <td align = "center">120x120x25</td> </tr> <tr bgcolor="#ffffff"> <td bgcolor="#fafafa">Fan Speed </td> <td bgcolor="#fafafa">[RPM]</td> <td align = "center">1600</td> <td align = "center" bgcolor="#fafffa">1050</td> <td align = "center">1200</td> <td align = "center">1000</td> <td align = "center">800</td> </tr> <tr bgcolor="#ffffff"> <td bgcolor="#fafafa">Airflow </td> <td bgcolor="#fafafa">[m3/h]</td> <td align = "center">26.5</td> <td align = "center" bgcolor="#fafffa">40.95</td> <td align = "center">25.7</td> <td align = "center">36</td> <td align = "center">62.9</td> </tr> <tr bgcolor="#ffffff"> <td bgcolor="#fafafa">Noise Level </td> <td bgcolor="#fafafa">[Sone]</td> <td align = "center">0.08</td> <td align = "center" bgcolor="#fafffa">0.08</td> <td align = "center">0.08</td> <td align = "center">0.08</td> <td align = "center">0.08</td> </tr> <tr bgcolor="#ffffff"> <td bgcolor="#fafafa">Static pressure </td> <td bgcolor="#fafafa">[mmH2O]</td> <td align = "center">0.62</td> <td align = "center" bgcolor="#fafffa">0.5</td> <td align = "center">0.54</td> <td align = "center">0.4</td> <td align = "center">0.3</td> </tr> </tbody> </table> If there is enough space, you should always go for the larger fans, as they can supply more air at the same speed than a smaller fan. ___ #### Bill of materials 1. Silent P12 Arctic fan 120x25mm (enclosed screws) 2. Buck converter (+ M4 screw and nut) 3. (optional 3x M4x10mm screws with t-slot nut) ___ #### Upgrade combined with - [Creality Ender 3 Pro dual drawer](https://www.thingiverse.com/thing:4653994) by DWS_design - [LM2596S LED Buck Converter Case](https://www.thingiverse.com/thing:3760365) by Xanmato - [Ender 3/pro/v2 Feet Riser - 38mm/45mm total clearance](https://www.thingiverse.com/thing:4721832) by squirrelf