This model is a mashup of two of my favorite hotend/part cooling solutions for my Ender 3v2. The basis is Victor Bared's Minimalist hot end shroud (https://youtu.be/TJxpiLG73dM), reconstructed and modified; and Whistleblower's 5015 part cooler (https://www.thingiverse.com/thing:4666359k).

The combination offers a compact and efficient replacement for the stock solution and provides good and reliable part cooling. Plus it is possible to do almost any hotend maintenance without removing the cover, nozzle swaps are easy with everything left in place. Blower fans are just slotting in and, when using the "for optics" cover, don't need any additional fixture screws.

It is strongly recommended to print in ABS (or, in my case, Extrudr Green-Tec Pro) to avoid heat damage over time - due to the compactness vast parts of the model are very near to the heater block! Normal PLA is a definite No-Go, PETG may last a while but requires frequent replacing.

Edit 22-10-22: added a model with fixing holes 1mm up = cooling ducts 1mm down