V3 KE 4020 Blower Fan Shroud

V2 Nozzle design now available, blower outlet now closer to nozzle, new design has improved air coverage and control

This is an adjustment to ILAN SABAR Creality Ender 3 V3 KE Extruder Housing to allow for 24volt 4020 Blower fans aimed at those that want to upgrade the fans and also not lose the original aesthetics of the V3 KE.

The cover had minor adustments to in cable routes to facititate the 4020 blower cable locations and also little tabs as the 4020 blowers have tab clips on the sides. The fan mounts have been increased to allow for M3 bolts to be used. I found the original bolts on the right hand side made it very difficult to put it on with out swearing, so I adjusted the holes slightly.

Note: The left hand side fan uses 2 bolts to connect to the cover, this is mitgated by snuggly fitting partially under the metal tab that is used to bolt on the cover.

The nozzles obviously adjusted to fit the blowers by being wider, while maintaining the same height and nozzle exit points. Due to the fact that blower design only allows one mounting point, the nozzle is also adjusted to allow it to clip onto the inside of the blower as an extra secure point.

BOM

• Two x M3x20 bolts
• Three x M3x16 bolts
• Two x 2pin 4020 40mm Blower Fan 24V. Link to example aliexpress product 
• JST 1.25mm Connectors. Link to example aliexpress product 
  Note: The color coding might be incorrect on some connectors. If the fans do not work, the polarity of the wires might be reversed.

Additional

Similar to the original cover and you can also upgrade the hotend fan to a 3010 axiel fan using the Ender 3 V3 KE 2510 to 3010 fan adapter, Link to the page 

Print Settings

• Material: PETG minimum
• Supports: yes
• Walls: 3 walls.

Q&A

Is this quieter than stock fans?

• Potentially, due to being bigger the fans can be slowed down to maintain the same air flow as the stock fans and hence be quieter

What benefits are there compared to other fan mods?

• Aesthetics mostly, the design is done mostly to keep with the original look of the V3 KE. It is lighter than the 5015 fan mods but the power to weight ratio is admittedly worse, the only pro to this over most 5015 fan mods is the center of gravity is closer to the X-rail which should allow improved input shaping.

If there is minimal benefits to this mod, why did you do it then?

• This is my first upgrade I have done as I learn how to use the CAD programs and the 
  intricacies of the 3d printer. I have tried and used the 5015 fan mods and they are good, but I wanted to go back to the original look while also needed to improve cooling. Plus it was kinda fun to (re)design and print a model.

Hope you enjoy!!!