Triangle tessellation to continuous surface

[Anonymous]

Hello,

I got a 100Mb DXF file which seems to be a readapted STL 3D scanning as it is made of tons of small triangles and despite being on a quite new machine, the program frequently freezes.

Is there a way to replace all the triangles with a surface, possibly simplifying the drawing (I only need to split the elevons and modify the front cover of this delta wing plane?

Thank you

[maxim_k · Accepted solution]

Welcome to Autodesk Forums!

Hi

If the model consists from 3D Faces , then yes, you can:

https://knowledge.autodesk.com/support/autocad/troubleshooting/caas/sfdcarticles/sfdcarticles/Conver...

But keep in mind that such operation can easily overload your Mac, so you can try to do the conversion by small parts.

[Anonymous]

thanks the solution is working but it totally freezes the PC even on a small surface. Is thee any way to simply the computational time? 

[maxim_k]

Can you share your drawing?
Save it in DWG format, it should become much smaller in size.

Maxim

[dgorsman]

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@Anonymous wrote:

thanks the solution is working but it totally freezes the PC even on a small surface. Is thee any way to simply the computational time? 

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AutoCAD isn't that great at complex surfaces.  You might be better off with Fusion 360 or a full-blown surface sculpting program for most, if not all, of such a process.

[Anonymous]

Here is the DWG, as suggested this format saves up a lot of space (21Mb vs 100Mb) but again even small surface union cmd isn't doable using a consumer pc.

[maxim_k]

Hi Giammarco,

I looked at your drawing and realized that @dgorsman was right - it is practically impossible to convert 3d faces that form the model into 3d Solids or Meshes in AutoCAD.

I used Rhinoceros for Mac to convert 3d faces in your drawing to 3D Solids, but at first I reduced meshes by 90% in Rhinoceros.

You can look at the result in attached drawings - Rhino export-solids.dwg - as it was exported from Rhino (solids)

and Rhino export-meshes.dwg - I converted solids, created in Rhino to Meshes to reduce file size.

Maxim

[Anonymous]

Thank you very much

Actually that's the only solution as the file is too complex to create a mesh