Probably more people has noticed that sometimes you see a small black piece laying near your Anycubic Delta printer.
After some investigation, i noticed that a few fins from the part cooling fan started to come off.
Searching the web for a replacement 40mm 10 thick turbo fan, i could not find it.
But sins the printing needs to go on, i came up with the idea to make a duct from 40 to 30mm to use a normal fan, those small ones you use in small cases. Happened to have those laying around.
Not the best solution but sufficient enough to get the job done till there is a replacement.
This part is designed to be 3D printed and should suit to be milled on CNC.
Don't print it to fast and use 3 perimeters.
Be sure to have some wall thickness for the holes in case you need to enlarge them a bit with a drill bit.
Designed with Inventor 2018