We have done comprehensive CFD to ensure this is the best duct possible for the stock 4020 fan. This will work with either the standard E3D v6 or Dragon hotends.
See pictures for more information
You will need to print:
1x Duct part (note: there are both 0.4mm & 0.6mm nozzle versions, choose according to your setup)
1x BLtouch Mount (note: there are two lengths, print both and try)
1x BLtouch Adapter bracket
1x Fan Clip
NOTE: some user may need to make or purchase fan wire extension, does not affect all users*
1.) Embed the 4x M3 nuts into the back side of Inclined Fan Adapter
2.) Install the inclined piece mounts where your existing fan is
3.) Insert 2x M3 nuts into fan duct, then insert into fan
4.) Use 3x M3x12mm bolts to secure fan.
5.) If installing BLtouch, bolt BLtouch to your bracket, and bolt bracket to Inclined Adapter
- if you need more instruction, Google Artillery Waggster mod and watch his video. This is the same thing.
6.) When routing stock 4020 2pin cable, see picture, route through cutouts and it should reach without needing extension.
We also have versions for: Volcano Hotend, and Slice Engineering Mosquito
-0.15 to 0.2mm layers
-No Support should be needed
Check out our other designs here:
Joint venture by two buddies on separate sides of the pond who joined forces to make the best damn fan ducts for as many 3D printers as we can