It's incredible how much cooling impacts print quality. Same printer, same GCode, different fan duct : r/3Dprinting
Big airflow semi-circular fan duct for Anet A8 by Manthos. | 3d printing diy, Useful 3d prints, 3d printer diy
Analysis and optimization of geometry of 3D printer part cooling fan duct - ScienceDirect
SAKEIOU 3D Printer Upgraded Nylon Magnetic Printing Cooling Fan Duct Accessories For Bambu Lab P1P X1 3D Printer Replacement : Amazon.co.uk: Home & Kitchen
Why I Modified My 3D Printer Cooling Fan Duct – 3D Printer Power
1pcs Bambu Lab 3D printer upgrade MJF nylon magnet cooling fan duct lab P1P X1 | eBay
Universal E3D Hemera Part Cooling Duct v2.0 for 5015 Blower by redangel1984 - Thingiverse
WANHAO i3 Fan duct by Thorped - Thingiverse | 3d printer, 3d printing diy, 3d printer kit
3D Printer Fan For E3D V5/V6 5V/12V/24V Cooling Fan With Bracket Duct Housing Guard For J-head Hotend for Extruder For Bracket Module 3010 practical parts (Color : V5 Bracket 12V Fan) :
E3D v6 CFD optimized adjustable part cooling duct by DaVinci2000 | Download free STL model | Printables.com