Filastruder filament guide 3 - The final solution

This is my last update. I decide to substitute the PTFE tube with a couple of ball bearings to minimize the friction. You can add also the same arm of the filament guide 2 (http://www.thingiverse.com/thing:1414397)

The ball bearing are these: http://cgi.ebay.it/ws/eBayISAPI.dll?ViewItem&item=152051839308&ssPageName=STRK:MESE:IT