Here is an entire assembly line setup for those that wish to start making their own filament (http://robotdigg.com/product/111/3D-...roduction-Line) The price? $16,800. I assume that comes with the Auxilaiary machines, but I"m not sure. Anyone know?

Single Screw 3D Printing Filament Extrusion Machine
3d printing filament extrusion machine



Auxiliary Machines:
Water Tank
Hauling Machine
3D Printing Filament Winder
Mould
Line Storge Shelf

I would think this isn't a bad startup costs for a potentially profitable business making filament