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CAD tip CAD tip # 996:

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Q - question

How to unfold 3D model (e.g. sheetmetal) into 2D?

A - answer This functionality is included in Autodesk Inventor. For AutoCAD or Mechanical Desktop you have to use some add-on application.

E.g. SPI Sheetmetal ( can unfold AutoCAD 3D solid models or MDT parametric models (or even lofted NURBS freeform surfaces) with all technological parameters for bending corrections, checks, etc.

You can also consider Litio 3D ( or simple utilities like that from

100% *  CAD 
1.2.2001    31106×  
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applies to: AutoCAD · MDT · Inventor ·

See also:
Tip 10916:How to project unfolded flat pattern to a sketch?
Tip 10719:How to add the unfold rule name as a drawing note?
Tip 10118:How to export a DXF file with punch points from an unfold?
Tip 9692:Unfoldable spiral-helix sheet metal in Inventor.
Tip 9583:How to add a new command to AutoCAD shortcut menus?

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How to get rid of the loaded LISP function? Is there any (unload) function? « | » How to invoke a command with variable number of inputs from AutoLISP?

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