It's easy to gloss over the fundamentals but this is the kind of stuff that takes our work to the next level :o

Why would it be an exception if the conclusion of this video is that NURBS curves are good for precision and maintaining the same form as it is matching the subdivision pattern?

That's a good question. Typically curves aren't transported with older polygon formats. But I just did a test and NURBS curves did transport with Alembic. Ultimately it depends on what you are needing to do with the curves, if the importing application supports them, etc. So it's really a use-case scenario thing that we'd need to define.

@@christopher3d475 Thanks for the quick reply. I guess I'll create a couple of test models to see if Blender curves will import into the sim. Sadly, many of Blender features/entities aren't compatible with the sim since it's integrated so tightly with Autodesk's 3ds Max. This is especially true for some Blender nodes. Yep, it's always a gamble when I try something new in Blender. Thankfully, the situation usually gets a little better with each new sim SDK update. 🤞🤞

No, that works just as well.

@@christopher3d475 Thanks for the reply. Your videos are helping me a lot!

I did explain why you would use a NURBS curve in this case, in fact it's the central focus of the video. Because it allows you to match the curvature of the template better than a bezier curve when it came to generating a subdivision surface.

@@christopher3d475 Ok, so... are you saying that the curvature matches while it's still a bezier curve and then after converting to a mesh, the curvature changes but the nurbs curve does not? That's the benefit? I know very little about nurbs but I had this impression that it was better to use for curving surfaces where you had maybe a curve curving INTO another curve. I thought there was more to nurbs than how well it retained its shape after turning it into a mesh (which I thought was the opposite of what you did with a nurb). ? anyway, I was trying to find a vid giving the MAIN reason why a person would model something using a nurb thing and to me, this looks like only a very isolated case but what do I know? thx

I've reported it as a bug, you could also report it, the multiple reports would catch their attention.

You probably duplicated it with the Duplicate Linked function. So when you edit one, the other changes also. You can unlink the two by going to Object Data Properties, and at the top you'll see the name of the object data and a number representing the number of times it's linked. Click that to make it its own unlinked duplicate.

thank you for your response.. also, I did a little tutorial on knife project and it worked the first time.. since then, knife project will not work at all.. Iam runninng into weird issues trying to work in blender.. any help would be greatly appreciated.. @@christopher3d475

You certainly could do that and just apply a subdivision modifier to the polyspline and it essentially becomes a NURBS curve. I did it to show people why using a bezier curve isn't always ideal and what the relationship between NURBS and subD is.

@@christopher3d475 NURBS curve and SubD polyspline being essentially the same is really cool, and the video demonstrated that very well 😃Keep up the good work!

Make sure it's set to 3D mode. 2D mode only operates on a 2D plane.

@@christopher3d475 it worked, thanks a million

Yes I agree, some NURBS surface modeling functions would be a good addition. I use MOI now and then for this reason.

@@christopher3d475 moi oh yes - plasticity is making a big impact too It has top surface tools now

@@cekuhnen Yeah, I've been meaning to go over and take a look at Plasticity.

@@christopher3d475 do it it has good DM tools

Yes, it's just the Blender Light theme, built in.

way to go thanks@@christopher3d475

Curves don't show up well on the dark interface, hence the reason for the light interface where they're much more visible for tutorials.

the themes should need a overhaule... I had the same problem even in the animation data area editors ....