CR10S Pro Hot End cooling 4020 turbine fan

Replacement for original shroud to fit 4020 turbine fan to cool down the Hot End Radiator. Designed to decrease the noise and use standard turbine (which I replace with 5015 for air duct).

Works with original air duct for filament cooling and also with all custom cooling duct which require original shroud (all mounting points are at the same place). May require different length of the screws- I did not check.

Much better access to the nozzle. Allow to change the nozzle without removing the shroud (really difficult with original version)

Under testing v1 printed in PLA. Suggest to print in PETG

Already prepared v2- with more distance from Hot end area and with more fillets and chamfers to improve strength.

V3 if come will be with lowered fan with 5mm to cover complete radiator. Now already hot end radiator is cold when touched during PLA printing with 225*C.

May be used with lower voltage- to decrease the RPM and noise.

In my setup works with “CR10s Pro fan duct with extra arm” designed by “Passman3d”, link below:

https://www.thingiverse.com/thing:3613494

On the last picture proposal how to print it (from Cura).

Additional parts needed:

7 x M3 nuts

3 x M3x25 screws

soldering or quick connectors for fan wiring.