Wanhao Duplicator I3 3D Printer

[Cyber Akuma]

What extra fan are you talking about exactly? I know some people added a fan to the control box... but that was put into the production versions long ago, and lots of people have modified the nozzle cooling fan, but the printer still comes with one.

[Barbarus]

A few pages back people have posted "home made" upgrade kits. Where they put on an extra fan to cool down the material more evenly and faster. So first you print a holder for the fan, then install that extra fan. But I wonder how do people wire it...