Extruding a surface by its centre

[Anonymous]

Afternoon,

Is there a way to extrude a surface (loft) by its centre and not from the side?

So its in the middle without having to go back and move the "wall" back to the middle?

Thank you.

[JDMather]

You mention both Extrude and Loft.  Not sure which one you really mean, and without example file or at least a picture - I assume you mean something like the mid-plane (Symmetric) Extrusion in Autodesk Inventor.

I don't think there is a way to do that in one step in Autodesk AutoCAD.

If this doesn't really describe your design intent - please provide more information.

[Anonymous]

That would be perfect if i was using Inventor. thank you though for you help.

[Alfred.NESWADBA]

Hi,

if it's really an open surface you can try:

• set DELOBJ to 0 so it will not be erased after command _THICKEN
• run command _THICKEN with a positive value
• run command _THICKEN with a negative value

creates 2 solids from your "center"-surface to each side.

To be careful: as every type of offset it might happen, that you can't UNION then both objects. This depends on the situation(s).

Here you can see a black surface, a green 3D-Solid created with a positive value and a red 3D-Solid created with a negative value for command _THICKEN

- alfred -