@pilou said: Seems a dangerous chair for hands' children or old person! I would add, "fragile" and "unstable," as well. There is no lateral (side-to-side)  connection, except at the floor "hinge." Any lateral force, up top, will bend and/or break things, down below. Attractive visually, but needs some serious real-world engineering to make it practical furniture. All I can think to say,Box, is that your posted image is, indeed, an animation. -Taff

I'm blown away, Taff, your work never fails to be inspiring

@ermin0s said: Are all the edges of that nexdome the same length? i want to build this in real, but then with those long toothpicks for meat. All the "copper" springs are the same, and all the "silver" ones are the same. Note, however, that the 3-way "splits" are NOT equal.  Since this is based on a 5-frequency geodesic tessellation of an icosahedron *(frequency 5v{1,4} to be specific,) * the three straight sections of the copper springs are different lengths.  The straight sections of the silver springs are of two lengths -- one in the center, with the two ends being the same. **CORRECTION:  ** I forgot that my last refinement (the most problematic, time-consuming exercise)  was to make the three-angle subdivision for each spring EQUAL.  Therefore, the three lengths (chords)  between geodesic nodes, for each spring, are identical.  Note, however, that the two springs don't share the same chord lengths.  The silver chords are 0.2834, and the copper chords are 0.2523, when the radius of the sphere *(to the nodes) * is 1.0000. [image: Rotegrity_Springs.gif] The CENTER of each coil corresponds with a "node" of the geodesic tessellation. -Taff

Regarding Octane, readers should take note that it is graphics-processor dependent (nVidia CUDA.) I found out, on the nVidia forum, that my Quadro FX 1500M is NOT a CUDA-compatible graphics card. DARN! The newest Dell Precision laptops contain CUDA-compatible nVidia processors, and that's where the price differences play in. The top-of-the-line contains 320 CUDA processors! No wonder it's so fast. More info on the Quadro FX Mobile processors: nVidia Quadro FX Mobile Products -Taff

What a great plugin for interior design... Thanks a bundle Jim!... I was missing it for a while!

Do you get the same great service as the airlines? certainly looks like the concept of personal space is similar. Wow it could be like the 50's and cement Tipis. You'll be driving down the highway and there's a jumbo jet motel! Only getting it to the site is an issue...

Thanks for the quick response. I'm left wondering whether a spring has both a stretch AND a compression character to it. (That's basically what Hooke's Law describes.) I haven't looked at the Newton specifics, but would be surprised if it didn't cover this. I'll play with it some more, to see what a SketchyPhysics spring can do. Ideally, I'd like to be able to set the 'resting' length of a spring, then the 'stretch' (pull)resistance and the 'compression' (push)resistance. A real spring has these three defining characteristics. If it won't work as described above, perhaps you can add the features to your notes, for possible future implementation. Thanks for your comments. I'll take a look at piston settings, as well. [Taff]