Printrbot Simple Metal Fan add-on.

* 12/3/15 update *****

had to rework it some, got an all metal UBIS, and thought it was working fine, the fan was just slid down a touch, offset by my mount.. turns out that was causing me some jamming issues, So a redesign was in order. Its been operational on my machine for a couple days now and so far so great. If i find any problems Ill clean it up and get it posted. Smaller design this time, not as bulky.

I printed mine @ .05 layers 270 rotated on Y. 40% infill.

Found the single fan just lacking, so heres my fix. Love feedback.

Takes a 40mm fan. designed to work with printrbot fan duct or other improved ones as well.

Print at .1mm layers, .2mm first layer. Rotated 270 on Y. Anything higher than .1mm requires support

fan duct pictured - http://www.thingiverse.com/thing:367602
wire management - http://www.thingiverse.com/thing:561148
spool holder - http://www.thingiverse.com/thing:581739
filament guide - http://www.thingiverse.com/thing:590750