Quick Release E3D Fan Duct for Dibond Mendel90

A fan duct for cooling prints which can be used instead of the standard fan duct when upgrading from the J Head to an E3D hot end (in my case a v6) on a dibond NopHead Mendel90. It uses the same 60mm fan as supplied by NopHead.

This is the second version of this duct and incorporates a quick release mechanism as well as more flexible height adjustment (a common request I got on the original one here: http://www.thingiverse.com/thing:491316 )

I have marked it as a work in progress because e