Arbortext IsoDraw > User's Reference > Menus > Element Menu > Advanced Tools > Extrusion Tool
  
Extrusion Tool
The Extrusion tool automatically generates a 3D solid from a 2D view. You can then change the extent and use the command 3D Transformation to select any perspective you like for the solid. The tool is ideal for profile-type solids, which exhibit the same contour over their entire length.
With this tool, all elements in the 2D view have the same depth.