As rapid prototyping techniques evolve from sculpture and form representation into parts that are utilized in the field, the need to convey the CAD designer’s design, manufacturing, and inspection intent for a product that is manufactured using additive manufacturing (AM) techniques must also be captured in conjunction with the geometry.
I know what you’re thinking, because I think it too:
No way will I put all the dimensions and tolerances onto a drawing, if I’m going to just send my part to a 3D printer. THAT IS STUPID!
And while I agree, if a product is to be used as the production end item, you must capture important details not typically conveyed through transfer of a 3D model.