simple parts, printable on small beds (e.g. UM2go) w/o support
freely expandable superstructure with just one part type
wheel housing for NEMA14-sized steppers
mounting/fixing @ 2.5x12 mm screws
hints:
steppers can get very hot, therefore shrinking tube should be used for insulation where surfaces are in contact with steppers, particularly when parts are printed with PLA
to avoid slip between shaft and wheel hubs shrinking tube can be used as well
a piece of bicycle tube can increase the grip of wheels
whoopsie
