What is the failed promise of parametric CAD? In short, model reuse. It’s a lot more difficult than it ought to be, for a variety of reasons. Several months back, I wrote a series of articles discussing those reasons, as well as some of the solutions that have come up over the years. What was missing […]
Taming the Upfront Cost of CAD
By Evan Yares, 3DCAD Editor About a year and a half ago, I wrote an article for 3D CAD World, asking the question “Should you buy your CAD software—or rent?” The thing that piqued my interest in the subject at the time was the release of a version of Solid Edge called Design 1, available […]
The Design World dynamic design challenge
Win a free dynamic design analysis of your mechanism. Get to market faster. Be a hero to your customers. When NASA’s JPL landed the Curiosity Rover on Mars, I was impressed. Not just that they’d done it blind (because of the time-delay in communications from Mars), but also that they’d done it by dropping the […]
The failed promise of parametric CAD part 5: A resilient modeling strategy
The model brittleness problem inherent with parametric feature-based modeling is a really big deal. And it’s something, honestly, that I don’t have a great answer for. I’ve even asked a few power users who I know, and their answers seemed to involve a bit of hand-waving, and a reference to having lots of experience. While […]
The failed promise of parametric CAD part 4: Going horizontal
In the early 90s, Ron Andrews, a senior product designer at Dephi’s Saginaw Steering Systems Division, became fed-up with the difficulties of editing parametric CAD models. So, he and a team of his colleagues, including Pravin Khurana, Kevin Marseilles, and Diane Landers, took on a challenge of trying to find a solution. They came up […]
The failed promise of parametric CAD part 3: The direct solution
Direct modeling—a syncretic melding of concepts pioneered by CoCreate, Trispectives, Kubotek (and many others)–has shown the most promise to cure the parametric curse. Direct modeling is today’s hot CAD technology. PTC, Autodesk, Siemens PLM, Dassault (CATIA, but not so much SolidWorks), IronCAD, Kubotek, Bricsys, SpaceClaim (and certainly some other companies I’ve forgotten) all have their […]
The failed promise of parametric CAD part 2: The problem is editing
In the previous post, I wrote about the failed promise of parametric CAD: problems such as parent-child dependencies and unwanted feature interactions, coupled with no easy way to either prevent, or check for them. The difference between modeling and editing in a parametric CAD system is simply the difference between creating things from scratch, and […]
The failed promise of parametric CAD part 1: From the beginning
The modern era of 3D CAD was born in September 1987, when Deere & Company bought the first two seats of Pro/Engineer, from the still new Parametric Technology Corporation. A couple of years later, Deere’s Jack Wiley was quoted in the Anderson Report, saying: “Pro/ENGINEER is the best example I have seen to date of […]
Maybe you don’t need to spend an arm and a leg on CAD/CAM tools
My friend Rachael Dalton-Taggart, Director of Marketing Communications at Geomagic Solutions (which is now part of 3D Systems), often has interesting perspectives on the engineering software market. Every once in a while, she’ll start an email thread on some intriguing or irritating issue, and include a bunch of industry editors/anaysts/consultants in the distribution list (we all […]
3D Master
3D MCAD is not “done.” Not by any means. Well over 40 years after the introduction of commercial 3D MCAD products, and 25 years after the introduction of feature-based solid modeling MCAD, many MCAD programs aren’t totally 3D. They’re 2D/3D. What I mean by this is that their 3D capabilities are inadequate to represent real […]
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