Drape results in jagged walls, solution?

Rhino Rhino for Windows
1

The drape command works out great except for overhangs where the resulting vertical walls become jagged (below image). I reduce the spacing to 1 and it does improve it. But ideally smooth walls resulted. I’ve tried the smooth command which helps sometimes but not other times. Any suggestions for me?

Thanks,
Sam

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image1347×742 277 KB

2

Below is another example of what I’m getting with drape. I’m envisioning being able to adjust the input points so it’s not a grid near the cliffs but rather follows the cliff edge. Anyone have any thoughts on how to get smoother vertical walls with patch, or perhaps something custom that could be developed?

Thanks,
Sam

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image1369×730 98.1 KB

3

you can try with this plugin:

4

Thanks Diego,

The manual smoothing tool looks like it could help, I might try that out. However, I’m looking for a less manual approach as I’m planning to batch this process for many models. But if I have to go that way, does anyone know of any cheaper manual nurbs or mesh smoothing tools for rhino?

There’s got to be a way to drape a surface or mesh over a 3d model and have smooth sidewalls without manual smoothing. I’d think this would be a common task in making molds. Anyone have any ideas?

Thanks,
Sam

5

I think there is no automatic solution for making molds, trying with drape is far from an acceptable result or usefull at least.
Maybe you can try with the _Silhouete command perpendicular to the model to get the curves where the model change its draft angle and then extrude or sweep the surfaces according to the partition line.

6

Thanks Diego,

I was trying something along those lines and it worked great at times, but some situations I was having a hard time with. I’m now trying to go the brute force way and creating my own mesh drape that can do really high point counts, thereby keeping the ridges as small as possible. And then I need to retopoligize, so I’m trying to find a way to do that in Rhino, started another thread for that.

If anyone else comes across this thread with alternative ideas how to solve this problem, I’d be interested to know.

Thanks again for your help,
Sam