All credit for the original design goes to ChrisRD
This is a very simple cooler/fan duct that is easy to work on and gives you great visibility to all the components.
The cooler should work with most of Creality's printers, such as the CR-10(S), Ender-3, Ender-2, and the Ender-5.
In my experience, the cooler does about 80% of what some of the other larger and more complicated coolers do, but in my opinion, it's worth the trade-off since this cooler just is so much easier to work on should something ever go wrong with the hotend.
The gcode file is ready to print (the print takes about 7 hours), you can use that if you are new to 3D printing and find it hard to get the right settings for the model or maybe if you are just lazy. The gcode is set to print at 200C but if you need a different temperature, then you can always change it after you've started the print. Btw the gcode is of the version WITH holes for zip ties.
If you have any suggestions on how I could improve the design further, then feel free to leave a comment :-)
Sorry if my English is bad, I'm 15 and English is my second language :P
Things remixed from the original model:
Remade the fan duct to aim more precisely right below the tip of the nozzle, And yes, I did test overhangs with the original and then my remix, and my remix did a lot better.
Made the holes for the screws larger, so that the screws no longer screw into the part itself, but instead just goes through (as they should).
Relocated the holes for zip ties higher up, since before the holes were blocked when you put in you 5015 fan. I also made a version without the holes for zip ties.
Flattened the round duct for the 40x40 fan on the top and bottom, to make support less of a mess to remove.
MAKE SURE to block the supports inside of the blower fan duct, as it will not be able to get removed after the print is done (see photos for guidance).
Use 3 walls, low printing speed, and >20% infill, the part needs to be strong.