Dual Fan v6 Mount for PSM

This is a dual-piece system to hold an E3D v6 hotend on my 2014 Printrbot Simple Metal, which already has been converted to a bowden Titan extruder system with my first Thingiverse upload. It is designed to hold two 50mm radial blower fans. One of these is wired directly to 12V so that whenever the printer is on, it blows air through the heat sink, providing better airflow than the v6's stock 30mm axial fan (with much less noise and hopefully longer life). The other is wired to the controllable