Besides that, the parts will be stressed with a lot of force. I doubt whether plastics are strong enough. Look at it working: <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=jiRgdaknJCg" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=jiRgdaknJCg</a> (at about 2:30 it is just computational art :)