Provided the transformation is not complete, you can switch to 3D mode from one of the tools named above. The switch between 3D mode and a projection tool can be made as many times as you like. First, select the elements you wish to edit. Then select either Rotational surfaces or Extrusion tool. You can now edit the elements using these tools. Provided this tool is still active, you can select command 3D Transformation. You will see this from the green points which you use to manipulate the elements.

Choose Element > 3D Transformation. The elements appears in 3D mode on the three axes of the coordinate system. You can now perform changes in 3D mode using the tools. The functionality of these tools will be explained in full below. If you have finished editing the drawing in 3D mode, switch back to the active projection tool and you can carry out further changes to the drawing. A description of the projection tools can be found in Advanced Tools and Rotational Surfaces.