Easy-to-print and efficient modular fan duct for  Ender 3 / CR-10 printers.
At the moment I drew a versions for using direct stock extruder / direct Gratch extruder / Bowden and two 4010 turbine fans because I use them myself.
At the heart of this extruder is the idea of good heat dissipation of the radiator and the shortest possible ducts for fans.
The system is modular, so if you like my work - you can write to me and I will draw the mounts for other fans or extruders. If you want fasteners without using nuts - you can also write to me.
Fasteners used:
16 x nut M3;
1 x 15 mm bolt m3 (for mounting left_wall and fixing right_wall_mount);
4 x 10 mm bolt M3 (for mounting model_fan_ducts);
7 x 7 mm bolt m3 (for mounting direct_mount and right_wall);
4 x bolt M3 (for mounting radiator fan);
4 x 10 mm bolt m3 (for mounting 4010 turbine fans).
UPDATE 25.02.2021
Improved airflow of the radiator.
Added a chamfer at the bottom of the walls to work with the new radiator_fan_duct.
Increased model_fan_duct wall thickness…