ANET A8 Alternative Extruder Fan Vertical

I broke my 40mm fan, so I'm using a 50mm radial fan (since I already had one). This is really quiet, and I have measured the bolt nearest the extruder reaching 38C (20C ambient, extruder 260C). This works, if you don't like it, don't make it.

Gives open access to the extruder, no heatsink required.

Version 2 is better, doesn't block X axis motion, and has the fan better centred.