Darkstar's E3D Ring Mount Hotend & Part Cooler.

UPDATE: 2023-06-21: Added an alternate shroud clamp that allows the mounting of a Creality Sprite DD extruder.

This is where my X axis linear rail conversion has led me to. You can find the linear rail conversion and carriage here: https://www.printables.com/model/191980-simax3d-ironm1-x-axis-linear-rail-conversion

This hotend assembly is designed to mount to the carriage in the above project.

The why behind this is pretty simple. I had previously converted the X axis to a linear rail, and had to design my own carriage to make that work. It works great, but I was not happy with the hot end configuration. It worked, just fine, but it was a little messy, and used a 3rd party part cooler. I did very much like the ducting for the heatsink cooler, and the overall compact nature of it, but it could be better. Here is what is possibly my final version; well let's just say instead that I have no intention of redesigning this, but you never know; the integrated part cooler could probably be better.

You will need to be using my X carriage from my linear rail conversion project. It is straight forward, and could easily be adapted to an Ender style printer.

There are 2 cover versions provided with this, one of which facilitates mounting a PL05, or similar, inductive probe for Z. I'll just jump to the BOM:

• 1 - 4010 axial fan.
• 1 - 5010 Blower fan.
• 1 - V6 ring mount compatible hotend; I'm using the Triangle Labs CHC hotend on my build.
• 4 - M3x30 SHCS (if your axial fan does not have recesses for the socket heat, you will need longer screws).
• 3 - M3x20 SHCS
• 7 - M3x5 Heatset inserts. 4mm deep ones will work too, but I prefer the 5mm ones.
• Zip ties. 
• Optionally a PL-05.

Print the parts, I have included a screenshot from my slicer for print orientation of the parts. You should lightly sand the mating surfaces of the base and cover. Install the heat set inserts, 5 in the base, 2 in the cover for the PL-05. Once they're installed, it just bolts together. I recommend installing the base on the carriage, and assembling it there. 

The base includes zip tie points for the wiring in 2 places. One for the hotend wires, and one for the umbilical of wires running back to the control board, to provide strain relief. Do not zip tie the bowden tube to the base.

During assembly, do not overtighten the bottom 2 SHCS holding the 4010 fan on, which also clamps on the part cooler. Due to the orientation of the pegs and holes to mount the part cooler, it is possible to cause cracking along the layers. It's not the end of the world if you get some cracking, but you need to be careful.