I want to learn how to build nurbs surfaces for a glider project I’m involved with. Is this book “Rhino Nurbs 3D Modeling” still valid and worthwhile? I’ve had a copy for years but never looked at it till now. Forgot I had it.
I am working on building wing surfaces and need to build NURB surfaces but keep coming up with polysurfaces. Just trying to figure out what I need to do to get NURBS.
To be honest, I can’t tell because I don’t know what’s in the book. What I can say is: The general concept of NURBS modelling is still the same today. So I guess most of the techniques from the past should still be valid today. (Please correct me if I’m wrong about this!)
I don’t really know what you are trying to model (feel free to share a sample picture) but this may clear some misconceptions:
Polysurfaces are made out of individual NURBS-Surfaces.
Trimmed and Untrimmed NURBS-Surfaces can be joined together to create a Polysurface.
But: Only the individual surfaces can be edited using controlpoints.
Classic NURBS-Surfaces are quadrilateral, if you have a triangular surfaces or surfaces with holes in it, they are trimmed.
Trimming does not change the underlying surface itself. The trimmed areas are still part of the underlying surface.
If you’re going for “non-quadrilateral” NURBS, you most likely have to get involved with SubD modelling or T-Splines of some sort.
Ok, I am in not any way expert, or even advanced, but a video series that solved almost 90% of all problems I had while modeling, and also, i’ve been applying some concepts while working with surfaces inside Solidworks as well, and it made my live easier there too, is this one:
Primary Surfacing
I am sorry I forgot his name, but he is damn active on this forum too, and I am sure someone will mention him just after I post this link
He shared some basics that none of the Udemy courses or/and my university teacher (Naval Engineering, we see very little in Rhino, they basically just mention it and say, go and use it now) told.
I hope it helps, I know the series is kinda aimed to more advanced users, but it is just too amazing to not watch right now.