Kosticks
Yesterday, I met Jane and John Kostick, the creators of many delightful and amazing and lovely 3D-geometrical art puzzles and structures, mostly in wood and metal.
Their website shows a bunch of their work. Their YouTube channel shows videos of the construction and/or use of various pieces. And their Facebook page provides some more photos and videos.
Really nice work, and I had a great time talking with them. Thanks much to the friend who introduced us!