Non-Coplanar polylines

[uzmazain]

In AUTOCAD, I would like to JOIN two non-coplanar
(drawn in different UCS) POLYLINES - how can I
do it? I would like to use it as a path to EXTRUDE

[fuccaro]

Welcome Uzmazain!
While the two polylines are on the screen set the OSNAP to
END points and start the 3DPOLY command. Click the
existing points in order to create the new 3D polyline.
When done you may delete the initial polylines.

[uzmazain]

thanks for the advise

[Big Mike]

Another option would be to change the UCS to
the plane through which you want to extrude
and draw the Plines on that plane.

[Mr T]

Another option would be
to change the UCS to the plane through
which you want to extrude and draw the
Plines on that plane.

The idea behind 3DPOLY lines is to avoid that. :D

Nick

[Big Mike]

That's true, but it helps to understand the theory of setting & rotating the UCS.

[erona]

That's true, but it helps to understand
the theory of setting & rotating the UCS.

I agree. Its a big thing when you get a grip on rotating
UCS especially when dealing with 3D objects. I'm a
big fan when it comes to rotating the UCS. 8)

[Mr T]

But you can do a lot BEFORE that bridge.

See here. :D

http://www.eezylearn.pwp.blueyonder.co
.uk/tutorials/cad/3d/extrude_revolve/
extrude_n_revolve.htm

Nick