Pear effector - v1

UPDATE: have a look at a new, improved version http://www.thingiverse.com/thing:2286944

This effector were inspired by Kirill91's one (http://www.thingiverse.com/thing:1569106), designed for E3D-V6.
I wanted one for E3D-V5 (and E3D-V5 clones), so I made this.
Furthermore, my Kossel mini reached 296mm max height build cylinder, I needed 300mm at least: now with this effector I can print up to 335mm.

Pay attention: I used small axial fan (http://tinyurl.com/l3kpx46), 25mm X 25mm X 10mm.
I also used some magnets (3mm diameter per 3mm height, from www.supermagnete.it) to join diffuser ("diffusore") with base. This should simplify assembly and disassembly.
Nuts in the upper base part are drowned in PLA: this mean you need to stop printing at height in order to insert them in the structure. I will change this in a future version.
A good idea would be to add some kapton all around aluminium hot block in order to insulate it.
A simple thermal and flow analysis has been started and