Quantity   Component name
2 × Nema 11 stepper motor
1 × Motor driver board with micro controller I reused mine from my 'Yet another laser plotter' project
2 × 608ZZ ball bearing
2 × 8 mm trapezoidal screw with brass nut, for 3D printers
2 × 20x60 Bosch Aluminium profile, 340 mm
2 × 20x40 Bosch Aluminium profile, 120 mm
6 × Corners for 20x20 aluminium profile
10 × Carbon steel nut for aluminium profile, M3
1 × UV 405 nm, 100 mW laser with driver board sells for about 20 € at the usual china stores
1 × USB to RS232 adapter with USB cable
2 × TMC2130 stepper motor driver A better alternative for the A4988
2 × Shaft couppler 8 to 5 mm
2 × MGN9 rails, 200 mm with short carrige
1 × MGN9 rails, 250 mm with short carrige
1 × Aluminium plate, 160x340 mm
1 × Aluminium plate, 110x170 mm
1 × bunch of screws, M3