FB P905 dual extruder, 3 sides cooling

for dual extruders
It's remix of existing system. It has holder for turbo fan with extended screws hole.
Down part is divided for two parts thereby cooling system can by printered by two different filament(e.g. pla+abs or pla+hips).
direction of cooling can be changed in future, I dont tested it yet
Rotate it before print!

27.11.2018 update
I have 2 mistakes.
1) The brim of details for glue does not so good, but is not fatal
2) Air holes in cycle should have small hole to down(change