How to Make Hydraulic Powered Robotic Arm from Cardboard - NTD Inspired

When LEGO is not enough fun, or even too easy with its prefabricated pieces, dump it … You can build your own hydraulic arm from scratch!! What do I need ? In fact it’s not that much, and most of the bits and pieces you may have at home. All you need is cardboard, eight syringes with rubber piston,...