It seems that the more complex a project is the more benefit there is in working in 3D. In addition to the parametric design David Best mentions, a good 3D model can help check for fit up and conflicts. One can extract details from a larger model, and conversely assemble details and sub-assemblies into a larger model.
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Industrial design is heavily into 3D modeling and parametric models. The level of detail and accuracy in a complex structure, like a semiconductor fab, is astounding. Everything is in the model- structural, electrical conduit, piping, equipment supports, you name it and it is there. The contractor builds from the model, not from plans. The engineers don’t do this because it is cool (which it is, of course) but because it allows better designs to be created faster and more accurately.
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3D modeling is not required for those complex designs any more than it is required for a piece of furniture or a kitchen full of cabinets. Like an industrial plant, though, applying modern computer-aided modeling to furniture, doors, cabinets, etc can provide similar benefits. Parametric models can be particularly valuable when a product line consists of many variations on a theme, or if a designer wants to examine the effect of changes (many changes!) on a design.?
When I was working for a living I never became adept at 3D CAD, and was barely functional with 2D CAD. I designed things, and had people who specialized in drafting to make the deliverable plans. At first it was all pen and ink, and then we transitioned to computers. Now that I am retired I just don’t have the energy or the inclination to learn another CAD package, but if I was building things for a living I think I would have to just to stay competitive.
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John Hinman
Boise ID USA
Kappa 450X and A941
