Wanhao Duplicator 6 angled fan duct

This is an angled duct to replace the original black fan duct.
Print it in ABS.

Added two versions of distance-plates, that fits between the fan and mounting plate.
I've lost one of the 3 little black distance rings. So I've had to made one by myself.

Added a modified version of the duct. This one should possible to print without supports.