Quantity   Component name
1 × NEMA 17 Stepper Motor
1 × Polulu Stepper Motor Driver
1 × OpenBeam 24 cm Extrusion
34 × 623ZZ Ball Bearings 3mm ID, 9.5mm OD
14 × M3 x 12 Bolts
2 × M3 x 20 Bolts
18 × M3 x 8 Bolts
30 × M3 Nuts
20 × M3 Washers
1 × Printed Parts https://www.matterhackers.com/store/digital-designs/automatic-print-ejector-the-punching-machine
1 × Laser Diode - 5mW 650nm Red http://www.adafruit.com/products/1054
1 × Photo cell (CdS photoresistor) http://www.adafruit.com/products/161
1 × Printed OpenBeam Brackets http://www.thingiverse.com/thing:969968
1 × Printed Laser Holder http://www.thingiverse.com/thing:1000898