50mm Wanhao Duplicator i3 v2.1 Rear blower V2

Two options:
Standard - this is for started duplicator bearing blocks - 5mm offset
Recessed Bearing - 20mm offset

This is version two for my blower. Changes are:

larger circunference around the nozzle
Air shield to keep it away from the heating block.
It only uses 50mm blower.

You can detach the blower in one piece. No need to detached the blower. Just undo 2 screws.

I recommend using a 2.5 or 3 mm drill bit to clean up the exit holes. not necessary but it helps.

I ran a 1