Robo 3D Adjustable X carriage w/removable adjustable double fan

EDIT: 11/16/2017
Added newer (much better) fan to this Thing.
Update: The bearings I installed on the Y axis mod are still in use. So, I think the problem was that I tightened them too tight and broke the bearings eventually. Everything works well with them just barely snug.

EDIT: 11/15/2017
Redesigned the fan again. This one is much better!
https://www.thingiverse.com/thing:2648964


EDIT: 8/27?2017
I designed a better fan for this mod right here>> DELETED!


EDIT: 04/22/2017
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