Quantity   Component name
1 × Arduino Mega 2560 the brains of the operation
1 × Ramps 1.4 popular 3d printer shield for arduino mega
4 × A4988 Stepper Motor Driver Carrier these plug in to the ramps board and power the steppers
4 × Nema 17 stepper motors I used 0.9 degree steppers
3 × Home switches optical or otherwise
1 × 3D printer hot end/extruder I used a cheap ebay option
1 × 12V power supply needs to be able to provide enough current for Ramps
1 × Coffee Maker check your local thrift store
1 × Solid State Relay Fotek SSR-40 or similar
12 × ball joints http://www3.towerhobbies.com/cgi-bin/wti0095p?FVPROFIL=&FVSEARCH=LXFPW8+
1 × 4-40 threaded rod http://www3.towerhobbies.com/cgi-bin/wti0095p?FVPROFIL=&FVSEARCH=LXD871+