Is uploaded also the free versions without sign or wrote. So everyone can customize it. V2 - some fix on the geometry to produce correct path. Now i'm printing it with pause at 0.80 and 9.00 to switch filament. This is a working grinder printed without support and raft at 90/150mm speed x 230 degree (standard settings on makerware). It's for a friend that have a Shop here in Canarias. Print time: 2h 25m with 2 filament change (3 colors). Filament was changed at Zpos 0.60mm and 9.20mm. Maybe better to pause at Zpos 9.00mm to fill better the last filament