double use fan, for Orca v0.2

My printer 3d (Orca v0.2), has a cooling fan (40x40) that blows air towards the top of hotend (extruder motor area). I realizzaro this project to add air jet on the pieces that are printed, to prevent warping, especially if they are of small size and high print speeds. This project allows you to use a single fan (60x60) for both goals. A flow diverter, activated with a lever, you can choose whether to send only hotend air with the fan running slow, or also on the piece in print. In this case, a