LEGO Great Ball Contraption (GBC) Layout 2012.9
Lego Great Ball Contraption (GBC) in my house.<br>my own 17 modules<br><br>tracking the blue and red balls.<br><br>running at 1.0 balls/sec<br>500 balls<br>size : 1.5m×6.5m<br>path length : 31m<br>construction time : 600 hours
Волшебно !!!!