Simple fan mount replacing the whole Ender 3 V3 KE extruder housing, while improving on it by including a bigger 4010 fan. It's designed to be printed easily, without unnecessary overhangs, at the expense of some additional weight and material. Whenever I've got the time I'll design a more optimized one for those that would prefer that.

Currently I have not had the time to design a fitting duct for the two model fans yet, so instead I'm using the ones based on the stock KE ducts from here. [https://www.printables.com/model/843704] Eventually I'll design my one ones, or take it upon yourself to create your own ducts.

Weight reduction

All measurements were done on a simple kitchen scale, and will be different with changed print parameters or material use. I also didn't feel like weighing the screws, so they are unaccounted for. Additionally, if you're looking for max reduction it is possible to break off some additional material from the 4010 blower fans, reducing another 4 grams if done correctly on both sides.

Stock setup
Housing 64g
Hotend fan 6g
Model fan 2x 12g
Total 94g

New setup

Fan mount 12g
Fan shroud 2x 5g
Hotend fan 12g
Model fan 2x 12g
Total 58g

Weight reduction: 36 grams

20-05-24///UPDATE///
I've added gcode files for the print with 5% infill using PETG, for those that like to print from the cloud like that. It has just a few changes to the stock parameters for '0.20mm Standard'

[Print parameters]

As far as material and print settings most things should work, but I wouldn’t recommend anything with a low melting point, we are mounting this to the heatsink after all. I used PETG printed at 250 degrees, 4 walls, 5% to 35% 3D honeycomb infill. I've noticed the design stays pretty strong even with very low infill, with 5% it cuts the total weight down to a total of 22 grams with the shrouds included. Quite the improvement over the stock shell weighing 64.

[Materials]

1x Ender 3 V3 KE
1x 4010 or 4020 24v standard fan
2x 4010 24v blower fan, like already present on the KE. I would suggest getting dual ball bearing
4x M2 12mm
10x M2.5 10mm

There are some screws that could be shorter or longer.

[Assembly]

[1]

First get the fans ready, make sure you have all the fans functional by testing them before assembly.

Note how the bottom of your fan looks, I've noticed the stock fans do not require the small standoff that I required for my fans. If your fan does not require it, just snap this standoff with some pliers off the print.

Both side fans have the cable length at 80mm and the hotend fan at 60mm, but anything longer or shorter would work as well.

Release the fan cables of the two side fans from their clamp so they can be routed from the back. Be careful because this clamp protects the solder points on the motor, so don’t pull too hard on these and secure them in place with a small piece of tape.

[2]

Start by mounting the left fan by positioning the cable in the groove and fix it with the top M2.5 screw, also mount the fan on the other side from the top.

[3]

Next mount the shroud on both sides to the bottom using the M2.5 screws.

[4]

Now that the fan assembly is ready, start preparing the other cables to the hotend in a way that the assembly fits. There should be enough clearance for everything to fit nicely.

[5]

When it’s ready, continue by routing the cable of the right fan behind the heatsink, and plug in the hotend fan. Install the assembly to the heatsink using the M2 screws and finally mount the hotend fan with the remaining M2.5 screws. Plug in both side fans and manage the cables if necessary, and check if all functions of the printhead assembly are working properly.

[Finish]

Enjoy the hotend assembly with its new fan mount, preserving the function of the stock housing, while improving on it with a bigger fan!

Simple Creality Ender 3 v3 KE triple 4010 fan mount

0.2mm layer, 2 walls, 15% infill

0.2mm layer, 3 walls, 15% infill

0.2mm layer, 2 walls, 15% infill

Remix Models