AutoCAD - Editing 3D Content

[BillAllenSE]

I'm just getting into 3D. Seems like it's mostly taking a 2d closed polyline and extruding along with other, similar tools. This seems fine for unique designs, but what about reusing existing content for other projects like door, windows, beams, columns, footings, etc? You can't stretch an extruded 2d polyline.

What am I missing?

Thank you

[ The subject line of this post has been edited for clarity by @handjonathan Original:  3D ]

[paullimapa]

just do a search on youtube for "3d modeling tutorial in autocad"..lots of links there to learn from.

[imadHabash]

Hi,

>> You can't stretch an extruded 2d polyline.

We need to see a certain case? attache here an image or video that describe well your need?

[AVCPlugins]

I recommend modeling boxes, cylinders and so on at once. Extrusion 2d-contours should only be used to build complex shapes.
To stretch/shrink 3d solids, you need to learn how to select the faces of the solids (with a frame and click while holding down CTRL) and then use the usual Move command or the GIZMO arrows.
Combine parts and assemblies into blocks for reuse. And create libraries of your blocks.
Here are some helpful tips for you: https://sites.google.com/site/avcplugins/likbez