CAD tip # 11252:

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Applying STRETCH to 3D objects in AutoCAD.

The standard command STRETCH does not support 3D objects (solids) in DWG drawings. But you can use similar functionality in some other commands to "stretch" faces in 3D solids.

The command PRESSPULL allows to select one or multiple faces in a solid and pull/move them (individually along their normal vectors) into one or another direction.
The command SOLIDEDIT offers its option Face > Move which can be used to move faces specified by selection and edges.
The easiest method for moving individual faces in 3D objects are the grips (3D gizmos) displayed after selecting the faces with Ctrl+select resp. after subobject selection (Shift+F1 to Shift+F5).
The most similar method to the standard 2D stretch is the LISP utility 3DSTRETCH, downloadable from Download. Load it with APPLOAD and type the 3DSTRETCH command. Select the faces to be stretched by window selection and specify the displacement (by 2 points or by a displacement vector).
See example:

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applies to: AutoCAD ·

See also:
Tip 12717:	How to hollow out a 3D solid body in AutoCAD?
Tip 12248:	How to remove fillet or chamfer from a 3D solid?
Tip 12013:	How to trim 3D solids with other 3D solid (3D trim).
Tip 8484:	How to apply material to a single face only?
Tip 6907:	The Separate option does not work on my combined 3D solids.

Selected tip: Civil 3D reports: Unknown command AECCTOOLBOX.

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