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CAD tip CAD tip # 6710:

Question CAD 
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Q - question

How to smooth a surface defined by individual 3DFaces?

A - answer You can smooth a surface defined by a group of 3D faces (3DFACE objects) but you have to convert it first to a 3D mesh.

If you get a series of 3D faces (terrain generator, import from another 3D software, et.c), you can convert it to a single "3D mesh" object in AutoCAD 2010. Then you can manipulate it, smooth it and interactively edit its 3D shape.

  1. First convert the selected 3D faces to individual surfaces - the CONVTOSURFACE command
  2. Then use the UNION command to join the surfaces together
  3. To retain the shape of the original faces, set the FACETERSMOOTHLEV variable to 0 (or perform this setting through the MESHOPTIONS command)
  4. And finally convert the unified surface to a 3D mesh object with the MESHSMOOTH command

Terrain-Mesh

See also the sample CAD video #74 (shot in the Czech version of AutoCAD 2010)
ACAD2010ADT2010Civil2010
100% *  CAD 
28.5.2009    15616×  
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See also:
Tip 11072:How to make an interference line from 3D Faces?
Tip 11054:Difference volume (3D solid) between two TIN surfaces (sets of coordinates)
Tip 9711:3DConstruct - converting a 3D mesh to a frame construct
Tip 9357:Intersection of a 3D curve with a 3D surface in AutoCAD.
Tip 8597:Flashing, patchy appearance of Revit 3D models in Showcase.


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