A20M 5015 fan duct

thingiverse

I designed this fan duct to fit on a 5015 blower fan to replace the under powered factory fan on the Geeetech A20M. I wanted to use the factory cage and still be able to mount the 3D touch. It is designed to work with this mount I designed: https://www.thingiverse.com/thing:3435662 This duct creates a nice tight pattern directly below the nozzle. Here is video of the fan in action: https://youtu.be/NzyEmW-KReA This fits with just enough clearance for the newer style long nozzle. Pretty sure the old short nozzle won't work. Print with a higher temp material such as PETG or HTPLA as it sits close to the hot end and may warp when no air is running through the duct if normal PLA is used. You can try ABS but this has thin walls and a fair amount of surface area, so warping may be a problem and clearance is tight. This was inspired by the Anet A8 Fan Duct Spaceship edition (https://www.thingiverse.com/thing:2088006) but is my own design.