https://makezine.com/article/science/paper-model-of-expanding-6-bar-bric/
Paper model of expanding 6-bar Bricard linkage - Make:
Feb 4, 2010 - YouTuber 36AM3B has lots of cool deployable-structure models in his channel, including an expanding frame (visible to the rear in this video) made from 5 of...
paper modelbricard linkageexpanding6bar