Hi, Unc -- Yep, I think that Mark is probably on the right track, although I did have a go at it in the free-form (or spline) modeler (I'm using RayDream Studio -- very similar archetecture, but some different terminology). I was able to get some pretty interesting twisted tube things, but only had about fifteen minutes to play around with it, so nothing exactly like what appeared in this guy's site.... With enough time, though, I'd try starting with a circle in the spline modeler, use a torus extrusion preset, and then start dragging verteces around until you get something approaching what you're looking for. Pretty simple concept, but actually getting it to do what you want is another matter entirely. Hope this is helpful. - Dex