Flexible hotend cooling for mendel90

Hotend independent cooling system for mendel90 and others.

Support for fan sizes 30,35,40,45,50,55,...

Based on:
- flexible hose http://www.thingiverse.com/thing:9457
- Fan Mounted Duct Plate http://www.thingiverse.com/thing:18411
Print additional elements:
5 x mhHoseSegment.stl
1 x mhRoundNozzle1_8Inch.stl

Tested with:
http://www.thingiverse.com/thing:183982
http://reprap.org/wiki/Strong_Nozzle

Blog: http://printerzero.blogspot.com/

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