Slide-In Dual Fan Mount for Zortrax M200

UPDATE NOV 2017:

I've stopped development of this, because this fan mount

https://www.thingiverse.com/thing:1901911

eliminates the crossbar behind the hot end, which makes removal of the fans unnecessary when changing the hot end. It's a better way.

NOTE: This is a work-in-progress, and there are some known issues. Some M200s only have three mounting holes in the heatsink. The slide mount is too tight. Some walls are very thin and fragile. I will continue refining the design as time