Glass Box Visualization
In 2D CAD systems, you think of projecting the views of a 3D model onto
the sides of a glass box to visualize the 2D drawings. If you have a 2D
model, or are designing in 2D, think in the opposite direction. Visualize
the 2D drawings folded up onto the sides of the glass box and projected
into a 3D model.
The following example started as a 2D drawing and was converted into
a 3D model.
