This machine is simpler than it's previous, with a perfect performance, and also with a sample of the creative process, priceless creation.
As in the video description:
"LEGO automatic liftarm sorter LS-L407.
This machine sorts liftarms by length (3,5,7,9,11,13,15).
The machine can sort 40 liftarms per minute.
Using one PF XL motor.
building time : 35 hours "
More information in: http://legokarakuri.blog91.fc2.com/