Yeah I always review after I post and the curves are not the same so.......failure again!

Hi Burr, that seems like it could be a good idea though - that would probably work although it may take a fair amount of tweaking of the surface control points to get the surface to pass close to the original curves.

- Michael

Yeah, I did a couple things but wasnt really paying attn to the original curves. (oops)

Turned out it was just a surface in that shape. Nothing close to the surface that was there. Even his surfaces didnt match the curves but they were very close.

Oh well.

Thank you for your suggestions.

Haven't tried them all yet, but did try a slightly different method with network.
Created two arcs which were very close to the original surface. The resulting network is close to the original, but looks like a patchwork when it is all done. All try the other methods to.

/Lars

Hi Lars,

> The resulting network is close to the original, but looks like
> a patchwork when it is all done. All try the other methods to.

Yes, this will be a common problem with many of the "piece by piece" approaches.

The area that you show there is all filled in, but the aesthetic result is probably not what you want - that's the reason why I would really recommend Patch as the best method since it builds one smooth surface result.

- Michael

> The area that you show there is all filled in

Ah, that's good to know, since it doesn't look that way when hiding the edges.

Hi Lars,

> Ah, that's good to know, since it doesn't look that
> way when hiding the edges.

Try selecting those surfaces and use Edit/Join to glue them together at their common edges.

If it won't glue together, then that would mean that the edges are too far apart.

Once joined you should get a better display at those areas when you hide edges because the generated meshes will have a unified structure along those edges.

When you have 2 surfaces that are just sitting next to one another but not actually joined, then the meshes that are created from them (which is what you see being shaded there) can have slightly vertex placements there, making it look like there are cracks and gaps between things. But that's just a display artifact from meshing.

- Michael

< that's the reason why I would really recommend Patch
But there is not yet Patch in MOI?

Hi Pilou,

> But there is not yet Patch in MOI?

Correct - that's why I recommend using Patch in Rhino for this situation.

- Michael

Your image here will make the same result than a "Patch" or it's an approximation?

Hi Pilou,

> Your image here will make the same result than a
> "Patch" or it's an approximation?

It's an approximation. Patch basically works in that same way, but has a fitting process that adjusts the surface to go through (or at least attempt to go through) some curves that you pick.

- Michael

Thank you BurrMan and Michael for your network-tips. I had already ruled out the idea to make a larger surface and trim it, because all I could come to think of was to make a surface of revolution and then trim that, but that wouldn't have worked for those eight cornerpoints.

The important thing for the surface is really that it's smooth and that it blends together well once you start copy it. And the networksurface seems like it does both.

Thank you very much both of you, I learned a lot.

/Lars