So I was using this design, https://www.thingiverse.com/thing:694135. I like the adjust-ability, but there were a few things I didn't like. The fan location, and lack of air flow direction. I also wanted to use the stock fans from the E3D V6 hot ends. So I made this series of heads. The other two versions of this head can be found here.
Minimalist (No cooling):
https://www.thingiverse.com/thing:2731587
Dual fans:
https://www.thingiverse.com/thing:2731717
Designed for 10mm M3 bolts and nuts, fan bolts length might depend on your fan. Designed to work with my light x-carriage found below, but it will work with any x-carriage with two m3 screws spaced 24mm apart:
https://www.thingiverse.com/thing:2731704
HeadwFan2.SLDPRT | 234.2KB | |
HeadwFan2.STL | 184.5KB |