I am trying to mimic the behavior of the following video:
https://www.youtube.com/watch?v=6pfnKuKy6Lg
I'm interested in the ball joints connected to the platform. I've searched for them online, but I only find ball joint rod ends that are at a 90 degree angle with a large shank. Are these types of joints in the video custom made or can they be purchased? I've seen them on some 3D printers too.