Hi klint, No need to leave grasshopper for this. I did it by first creating an unrolled version of the surface using a rectangle, circles and the planar surface component. Then I copied the trim information from this surface to the double mobius strip. If you want the definition i can upload it: http://grasshopper3d.googlegroups.com/web/doublemobiusholes.jpg Your double mobius appears to be made from two surfaces, you can use only one.
Btw, in another thread (with the title "delaunay/voronoi meshes") i posted a definition that uses the marching cubes algorithm. This will create any of the isosurfaces you asked for found in the k3dsurf program by just copy/pasting the formulas. It's slow but it works. Here's an example of isosurfaces using this definition (with low resolution) http://grasshopper3d.googlegroups.com/web/marchingcubes.jpg On Dec 8, 11:50 am, klint <[EMAIL PROTECTED]> wrote: > Guess it's not possible to cut holes in surfaces. > > My aim was to replicate this double moebius figure from Rinus Roelofs > -http://www.rinusroelofs.nl/rhinoceros/rhinoceros-m06.html > > Did the surface and the circles in GH, and cut the holes in Moi3D > -http://grasshopper3d.googlegroups.com/web/doublemoebius.gif?hl=en&gsc... > > /Lars > > On Dec 5, 1:09 pm, klint <[EMAIL PROTECTED]> wrote: > > > Thank you for your replies. But I think I have to rephrase my > > question. In the first post I tried to cut a hole through a surface, > > that didn't work as expected. But by capping cylinders and tubes, > > creating solids, the Solid Difference worked perfectly. > > But if you start with an irregular surface, is it still possible to > > cut holes in it? Understood from another post that the Rhino command > > CreateSolid isn't implemented in GH yet. So if you start with an > > irregular surface there's no way to make it a solid. > > > On 5 Dec, 03:18, postal256 <[EMAIL PROTECTED]> wrote: > > > > try to cap the cylinders, then use Solid Difference, then 'BRep > > > Components', "List Item", and use a slider (integers) to single out > > > the center column (it will probably be number 0 on the list, so you > > > could probably skip the slider and just enter 0). > > > > Eric
