FolgerTech 2020 i3 Z leadscrew upgrade

UPDATE:

• Re-uploaded the STL files with units in mm.
• 06Aug2015: Added X ends for 5mm threaded rods

Motor and Idler were from the kit's original STL modified only to fit the leadscrew nut.
Additional modification is to secure the bearings with an m3 bolt as i have noticed that after a while, play on the bearings appear due to the original design's slit.

The belt tensioner was derived from heartless's design: http://www.thingiverse.com/thing:872944 modified slightly to fit this idler.

Take a look also at http://www.thingiverse.com/thing:936437 for a Z standoff.

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