Robo 3D R1 Double 40 mm fan setup - hexagon hot end

I found that the other double mounts didn't fit my machine because it seems that the hexagon hot end was raised 1-2 mm in my particular Robo 3D R1 model (purchased August 2015). 

The other designs were scrapping the build platform. Specifically I tried this ones: http://www.thingiverse.com/thing:821080 http://www.thingiverse.com/thing:1026691 I kept the same double mount and modelled the shrouds again.

However several modifications were made to accommodate the extra mm that were needed to clear the build platform and still point the air nozzles in the right direction. The inner surfaces were given a nice curved contour so air flows smoothly to the nozzle end. It sits nicely 3 mm above the build platform now! 

I used 2 coarse threaded 1/8" phillips screws to mount each fan shroud onto the double mount and 2 fine threaded 1/8" allen screws to secure each fan to its respective shroud. The shroud holes where the fan gets screwed should be threaded using the appropriate 1/8" tap, be gentle when threading this holes because if you try to do it in just one go you will heat up the plastic and destroy the threads, just do 1-2 mm at a time and pull out the tap rolling backwards, do this until you get the hole threaded all the way to the other side. 

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