Hello my friends! (=
After a few months, I understood need to try another fans, instead 4010 model. So I bought radial fans, and I designed the new fan holder. What can I say... It's AWESOME! Super flow and without cooling of hotend.
If you using x carriage for Re-D-Bot, and you want use new fan holder with volcano, I recommend increase holes (bellow you can find image) or use updated version (Carriage_base_back.STL you can find there).
This fans is pretty powerful, and main printing going on 40-50% of fan power. If you want reduce noise of fans, in Marlin you can turn on sofware PWM for fans. You need uncomment this in Configuration.h
Video of print test: https://youtu.be/MXtuoXqMKMM
P'S: In files I published "Fan_duct_filament_V2_nozzle_x2.STL" sources, so you can design your nozzles, with your own forms and sizes.
I used this fans.They are pretty good, I recommend (;
Supports is not required, but can help get better quality (;
For assembly you will need to print main fan holder (Fan_duct_filament_V2.STL) and two nozzles (Fan_duct_filament_V2_nozzle_x2.STL).
All screws (4), nuts (4) and washers(6) has M3 size. Two fans like this.
Sorry, forgot put nozzles in photo >_<
How I printed. Supports are not necessary, but helped get better quality. I like quality :P
Preparing screws with nuts
Mount the fans
Well done! (=
Now, connect nozzles and done.
In Finally, just unscrew old fan and replace by this.
Update Carriage_base_back.STL of Re-D-Bot x-carriage for Volcano (just recommended, not required). You can increase holes of your current printed element, but will be careful.