Not sure this is the right place to get this type of help, maybe someone can point me in the right direction. I’m brand new to grasshopper, (I have a hunch that may be part of the answer to this inquiry) and used to using rhino with a mostly solid/void basic approach where platonic geometries are usually plenty effective as starting points. in this case im trying to replicate (doesnt have to be exact) this paper model of a starling murmuration that’s meant to fit inside a 12" “sphere.” I haven’t come to the stage of adding perforations, right now im mostly looking for help making a surface curve on itself into a knot like in the photos. the two rhino screen shots show how I thought this might be approached. on the left, the “sphere” (really only a few arcs of the sphere) “cage” is a close match to my model, achieved by cutting circles out of two adjacent cylinders, im happy with that. on the right is my attempt to create a surface that could be folded up into a sort of mobius-like knot that would fit inside the shape on the left. I thought there would be enough nuance in the “bend” command that I could pull off mimicking the way I actually made this out of paper, but im pretty sure bend is not going to be the way to go, and perhaps neither is starting with a flat disc with a spiral cut in it. it was enough of a headache just achieving that spiral perforation in the disc surface, and now im realizing that bending discrete parts of the spiral individually as I did with my paper model is not easy in rhino. I attempted to do this with curves and control points only, and then to loft afterwards, but I couldn’t get results that I was pleased with. can anyone suggest a tutorial or forum or anything that might get me on the right track?