I found the original fan insufficient and it blocked the view of the hotend.
This asembly requires that you cut the M4 thread, so it goes all the way through the bearing block.
Bolt holes for the blower is tight enough in the print for the m4 screws cuts threads.
M3 screws and nuts to asemble the two parts
The fan is a standard 50x50x15mm 12v blower / radial fan
accessories and modifications:
http://www.thingiverse.com/thing:1650495
https://www.thingiverse.com/thing:2638616
https://www.thingiverse.com/thing:2539129
https://www.thingiverse.com/thing:2499672
https://www.thingiverse.com/thing:2253654
https://www.thingiverse.com/thing:2246171
https://www.thingiverse.com/thing:2197548
https://www.thingiverse.com/thing:2024987
https://www.thingiverse.com/thing:1904493
| fan_duct_holder_stp.step | 310.5KB | |
| fan_duct_hold_v1b.STL | 271.0KB | |
| fan_duct_hold_v2.STL | 276.5KB | |
| Wanhao_fan_duct_.STL | 913.8KB | |
| Wanhao_fan_duct_stp.step | 815.3KB |
