Adjustable E3D V6 / Volcano Layer Fan

A collaboration between [thatch](/thatch) and myself. A lightweight layer fan that fits both E3D V6 and Volcano length heater blocks. Inspired by [Tom114](/thing:1746358)'s remix of Prusa MK2 fan.

Everything should print without supports, however there is a trap nut on the blower bracket that may require them for your machine. The blower bracket can be slid up and down along a half dovetail to the desired height before tightening into place.

Requires:
- 50mmx15mm radial fan
- E3D cold zone fan and plastite screws
- (1) M3x35mm cap head screw (longer can work)
- (1) M3x20mm cap head screw (longer can work)
- (2) M4x20mm screws for the blower
- (2) M3 nuts