Quantity   Component name
1 × Printer skeleton from a long dead Epson printer
1 × TD62003AP darlington array for the z-axis motor
1 × Motor driver circuitry from the same printer as the skeleton
1 × stepper motor 4-winding unipolar 12V, for z-axis
1 × DC motor - 12V for spinning the bit
1 × tact switches for manually setting z-axis
1 × ATMega 328-P
1 × PC power supply
1 × 0.8mm drill bit the dollar store variety. designed for hand held router
1 × various wires, screws, resistors, bits of metal See the schematics and pictures for details
1 × plastic cutting board from the garbage, of course