Unextrude object

[Warren Rempel]

I have created a large number of walls in 3D, which I need to convert back to 2D images. When I use the extrude tool to reduce them down, the wall disappears. Obviously, this is great if you're undoing walls, but I want to reduce the height to 'zero', while retaining the outline in plan. Is there a way to do this?

[Dave R]

The easiest way I know of would be to use Select to select everything above the bottom of the walls. Then hit the Delete key. A right to left selection box dragged across the walls, making sure to avoid the bottom should take care of it.

[Box]

Also depending on your structure and the actual results you want you could use a section plane or change the view to top and use parallel projection.