You can 3d print this conveyor model parts seperately and assemble with m3 bolts. In step file, you can find all of parts (chasis, rollers, drums, housing, chute, walk platforms,motor and gearbox), overall dimension is given in the picture. You can see the 3d printed results in pictures. Suitable with all brand fdm 3d printers, table size should be min 200x200mm and print material should be pla.