UPDATED VERSION
[ New version has larger side vents and bigger recesses for adapter-to-motor bolts ] 

This is for the BIqu H2 extruder. The extruder motor can get hot under certain circumstances - incorrect retraction settings or very high flow rates (ie high flow nozzle).
This uses a 30mm fan (pulled from an E3D V6) and directs air against the extruder motor with more than enough airflow to cool it.
Plus, it looks pretty sweet as well ;)

**Instructions:** Two 3mm bolts (diagonal from each other) hold the adapter to the motor, and the other two hold the fan to the adapter.

30 TO 35MM-v2-BIGGER-VENTs.stl

UPDATED VERSION
This is for the BIqu H2 extruder. The extruder motor can get hot under certain circumstances - incorrect retraction settings or very high flow rates (ie high flow nozzle).
This uses a 30mm fan (pulled from an E3D V6) and directs air against the extruder motor with more than enough airflow to cool it.
Plus, it looks pretty sweet as well ;)

After designing dozens of ducts and mounts for the H2 for myself that were overly complicated or not very effective I wanted one that was simple and **utterly** effective and accommodated am inductive probe ([Omron style](https://www.amazon.com/gp/product/B01JLN4CVE/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1)) .
The 4020 puts out a ton of air and is overpowered for the job of cooling small patches of hot plastic and with the vent being 20mm x 2.4mm it's more than up to the task. 
The fan snaps in with some gentle coaxing and doesn't require bolts although if your fan's dimensions differ, there are bolt holes to accommodate that. Since the bolt path is fairly long I made the diameter of the  deepest part of the bolt holes smaller to allow for self-tapping so you don't have to locate a really long M3 bolt.
The probe mount holes are made for heat-set inserts but do have nut recesses behind them if you want to go that route. This was designed around the small Omron style probes but at the last minute I added a BLTouch mount that I haven't tested as I don't use one currently. 
Please let me know if it's completely buggered, though.

The main duct and the bltouch mounts are adjustable insofar as height so between the two you should be able to find a happy distance between the bed/nozzle, bed/probe.

Simplex Biqu H2 4020 Fan Duct with Probe Shroud

Simplex-Main-V1.stl

I got tired of bootlegging things together to mount my ADXL to for my Y axis so I put together this little mount that goes with[ the Classic Ender 3 Bed Handle](https://www.thingiverse.com/thing:2957507) and the [M4 Knurled Nylock Bed Leveling Knob for Ender 3](https://www.thingiverse.com/thing:4770097).

I strongly suggest you put some double sided tape under it OR just put a couple drops of super glue under it to stop any lateral movement.
The tolerances are fine but everyone's printers are different and I felt making it super tight might make it hard for others to install.
It works as advertised, however and you can theoretically perma-mount an ADXL on your bed.
I realize this is a pretty niche problem. You need to be using the bed handle AND a knurled knob. **The stock Ender 3 bed level wheels will not work. They're too wide.**

ADXL Mount for Ender 3 Classic Bed Handle AND M4 Nyloc Knurled Knob

I designed this for a specific need. My wires run in front of the gantry and I needed a hotend cable chain adapter that was tall. Simultaneously, I was doing input shaper tests on my machine and needed a mount that wasn't tied to a hotend fan or duct as they tend to change often.

BIqu H2 Cable Chain Riser with ADXL Mount

Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:5030238.

I made this as a more robust option to simply zip-tie-ing cables to the extruder plate on my Ender 3. It fits 8 inch zip ties and smaller. I'm not sure how much larger than 8" it can accommodate, however.

If you're using a direct-drive setup on an Ender 3 and have nothing where your extruder used to sit, then this will work for you. 

Requires:
2 - M3 x 8mm bolts
2 - M3 nuts

You can use more bolts but it really isn't necessary.
It can be oriented with in any direction depending on your needs.
If requested, I can make one to accommodate larger ties.

Enjoy!


Ender 3 Extruder plate Zip Tie mount

Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:5252068.

There are many cable chain systems based on mounting to the extruder stepper motor. If you don't use the stock extruder or don't have it mounted in the stock location, you are unable to use any of these items.
This is simply to screw to your old extruder stepper location and then mount whatever cable chain system you like.
For Example:
https://www.thingiverse.com/thing:34048
https://www.thingiverse.com/thing:3566939
https://cults3d.com/en/3d-model/tool/creality-ender-3-stepper-cable-chain-bracket-heavy-duty-v2

10% Infill (you can do less but, come on, really?
Low-Qual 0.28 (< 1hr print )

I've included the Freecad file in case you need to change something but there's not much to it. Some might want to make it taller depending on your needs.


Dummy Nema 17 Stepper Motor for Stepper-Based Cable Chains+

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