Vertex K8400 E3Dv6 Single mount

Inspired by rrekwa's (http://www.thingiverse.com/thing:750821) and others' designs for dual E3D T-bar style mount I created one more suited for single extrusion. This design allows you to have the E3D fan pointing back allowing for no loss of build area.

It also lowers the Vertex small fan and places it closer to the hot-end.

##### Needed
- 4 M3 long machine screws and locking nuts
- 3 M3 20 mm machine screws and nuts for the clamp.

##### Mounting the main piece to the carriage clamps (long screws)
I snipped four 61 mm pieces from an M3 threaded rod and used loctite (strong) with locking nuts (4 mm high) to create the screws of the required length.

##### Y end-stop
I cut a piece of plastic and super glued it to the underside of the xy bearing clamp so that it protrudes about 1 cm.

##### Notes
Depending on material you use, be sure to scale (to counter shrinking) by a suitable amount.