You need:
- cardboard,
- 8 syringes with rubber piston,
- old battery,
- 4 pipes,
- popsicle sticks,
- glue,
- water
- and patience
Video: How to make a hydraulic arm from cardboard
Read Also
We are pleased to be giving away four double passes to the new movie 'The Holdovers' to our GrownUps members.
Join the Discussion
Type out your comment here:
You must be logged in to post a comment.