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 the 6-bar linkages shown here. I got interested in Bricard linkages because of this recent model from Thingiverse user raju, which purports also to be a 6-bar Bricard linkage but looks, to me, an awful like what I’ve always called a kaleidocycle or flexahedron. And I don’t really know enough about any of them to understand the fine distinctions. Can somebody help me out?