Reddit reviews Creality Original 4010 Blower 40x40x10MM 24V DC Cooling Fan and 24V Circle Fan for 3D Printer Parts Ender 3/Ender 3 Pro

Never heard a fan make that noise. Time for a new one.

https://www.amazon.com/Creality-Original-40x40x10MM-Cooling-3D/dp/B07FTNCC9B/ref=asc_df_B07FTNCC9B/

I imagine u could find the 4010 by itself for cheaper on aliexpress or ebay

ahh, yep! hah, that's where I've landed as well--I want to go back and try the OEM fan. My problem is that one of my fan blades snapped off (accidentally touched it with PETG filament when I was changing it out). So I just need to find a good OEM fan I can buy new.

This is what I've found: https://www.amazon.com/Creality-Original-40x40x10MM-Cooling-3D/dp/B07FTNCC9B

Hopefully it'll be equivalent (although FWIW my original fan had 9 blades, the one in the pic has 7.... we'll see when it arrives).

And wow what a difference on your two prints, night and day difference! The yellow print looks very similar to the issues I dealt with all weekend (but mine has been on a much smaller scale). I tried soo many different combinations of speed, retraction/coasting, temperature, and had both under/over extrusion. Nothing would consistently give me good results.

Sounds like the part cooling fan! Mine is doing the same thing. I got this link as the recommended replacement:

https://www.amazon.com/dp/B07FTNCC9B

Stock fan? Or do you want to upgrade?


Stock

Creality Original 4010 Blower 40x40x10MM 24V DC Cooling Fan and 24V Circle Fan for 3D Printer Parts Ender 3/Ender 3 Pro https://www.amazon.com/dp/B07FTNCC9B/ref=cm_sw_r_cp_api_i_7MEkDbBWP83RN

https://www.amazon.com/Creality-Original-40x40x10MM-Cooling-3D/dp/B07FTNCC9B/ref=sr_1_3?keywords=ender+3+hotend+fan&qid=1563636450&s=gateway&sr=8-3

This is an exact replacement. I had zero problems since.