Quantity   Component name
3 × Stepper motor NEMA17 e.g. 17HS15-1504S-X1
1 × Motion controller PoKeys57E, a motion controller with Ethernet connection. Requires additional 5V supply.
3 × Motor controller PoStep 25-32 small stepper motor controller
10 × Ball bearings small MR 104 2RS 4x10x4 mm
6 × Ball bearings big 605 2RS 5x14x5 mm
3 × Axis 5 mm steel that fits through the bearings, see CAD for length
1 × Programming software: RDC from RobotDimension