Simple Method How to Make Hellboy Robotic Arm from Cardboard Posted: December 20, 2024 | Last updated: December 20, 2024 How to Make Hellboy Robotic Arm from Cardboard In this video I show you how ...

It's really important to leave some string hanging down so it reaches the base of your cardboard arm. When you see the top of the string poking out of the final straw, use tape to stick the string ...