Raz85’s Instructable for a Cardboard Spider Quadruped offers a nice demonstration of the surprisingly durable material properties of humble cardboard, replacing the more familiar milled metal or plastic limbs for a quadruped robot with scrap cardboard.
First of all it is widely spread, you can find it anywhere and if you like to buy is very cheap. Corrugated cardboard is a stiff, strong, and light-weight material made up of three layers of brown kraft paper and most of the packing boxes are made from it. So it is very easy to find some.In my case I used a shoes box which I’ve cut and make the frame out of it. The carton that was provided by my box was a 2 mm thick so it is very thin. So for each part of the frame I’ve had to cut three identical parts and glue them together with double tape scotch. So actually we will have to make 3 frames to have at the end a 6 mm thick carton.
Cardboard Spider (DIY Quadruped) [Raz85/Instructables]
(via Beyond the Beyond)