A site dedicated to CNC of Mini lathes - the 7x10, 7x12, 7x14, and 7x16
Turn ABS pellets (cheap) in to filament (expensive)
Based on work by Hugh Lyman (Extruder I, Extruder II), FilaStruder, and bobt.
Power supply: 12v 10a from Ebay for $12.25 shipped (search "12v 10a power supply")