PrintO W100L New Extruder

New extruder for 3d printer:
PrintO W100L: http://www.printo3d.pl/sklep/drukarki-3d/grawi-res-printo-w100-l-diy/
Better, modified idler now shouldn't make problems when the filament diameter varies more than 0.1 mm.

Needed parts:
606ZZ bearing
1x M6x15
1x M3x30
2x M3x25
1x M3x20
1x Spring