Hydraulic robot made of cardboard and scotch duct tape.

Step 4: Start building

Now the best part, when you see that your robot starts taking shape.
The next piece you have to make is a cube that is going to hold together the bottom of the 2 “A” pieces
For my robot I used a cube that is 3 inches wide by 1 inch sides (cube= 4 sides)
After you cut and fold the cube reinforce it with tape.