Rostock Max v2 Layer Fan Shroud 30mm

I needed to get my layer fans working again after many modifications to my hotend mount. I found that I had three 30mm box fans sitting around, but all the shroud designs I could find were either for 30mm squirrel-cage fans or 40mm box fans. So I made this.

One nice thing: I had been playing with some other ducts that had a slight interference with the axles on the effector plate. There is very little room at the corners, actually. The original shroud design that I borrowed/stole (see be