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CAD tip CAD tip # 7857:

Question CAD 
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Q - question

Why the MESHSPIN command complains about the object type?

A - answer The function "Spin Triangle Face" (MESHSPIN) works only with 3D objects of the type Mesh, composed from triangular faces. In these neighbouring faces you can swap their common edge.

On a meshed regular object composed from quad faces you can use the command MESHSPLIT with the Vertex option to create triangular faces.

Original mesh

Original mesh

Split face

Split face

Selection for spin

Selection for spin

Swapped face

Swapped face of the mesh

The MeshSpin function is intended mainly for irregular objects, to solve boundary shapes.

100% *  CAD 
14.3.2011    4655×  
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applies to: AutoCAD 2011 ·

See also:
Tip 12749:Generate parametric mathematical 3D surfaces (meshes) in Fusion 360.
Tip 12710:Boolean subtraction of 3D mesh objects in Meshmixer.
Tip 12237:UnfoldRS - unfold 3D surfaces to 2D in AutoCAD.
Tip 12233:How to compare two 3D mesh models and find differences/changes?
Tip 12184:Overview of CAD formats supported in Inventor 2020 (import/export/AnyCAD).

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