Filament pulley - CTC A8

I maked this filament pulley for my CTC A8 printer. It decreasing chafing of filament about display.
It is situated above display. Pulley must spinning freely.
Also you need a metric screw with nut (2,6mm - shank diameter or nail as shaft) and it all simply insert above display.

Print temperature 200/65°C

pulley - brim rquired, supports everywhere, resolution 0,2mm
wheel - brim required, no supports, resolution 0,1mm
infill 100%
Used slicer - Cura DGO 14.07

printed on glass with extra hard hair spray

You can choose between 2 parametric wheels - simple and complicated.
source codes of wheels included.

When right cooling and oiled leading rods, I observe accuracy improvement of 3D prints with this pulley.