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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 best practices are a potentially good step forward, they need to be straightforward enough that mere mortals (as opposed to power users) can follow them.Around Christmas last year, I got a call from Richard Gebhard, an engineer’s engineer, who has made his living selling CAD, and training people to use it (including more than his fair share of power users), for longer than he would like me to admit. (I’m pretty sure I’ve been in the CAD industry longer than him, though.) Richard told me he had something he wanted to show me, and if I’d take the time to meet him, he’d buy me lunch.What Richard showed me was a way of creating and structuring CAD models that made a lot of sense. It not only reduced parent-child dependencies, but it made them more predictable. And, more importantly, it made it a lot easier for a mere mortals to scan through the feature tree, and see if there were any grues (it’s a technical term.
Design with Alibre Design Expert 2018.0.1 full cracked. Description: Alibre Design Expert a software engineer. Your software is a very long history. If you are using this software, you can use this software. Also, this software has a very high accuracy. There is a very precise design with this software. Using the Alibre Design Expert Software. Alibre Design Expert 2018.0.1 + Crack, Alibre Design 2018 is powerful 3D CAD software with 20 years of development that’s easy to learn, easy to use, precise, uncluttered, extensible, and inexpensive. Skip dozens of extra clicks, poor sketching environments, and strict modeling.
Feel free to look it up.)Over the next several months, we had lunch several times. I made suggestions. He rejected some, accepted some, and thought about others. At the same time, he was bouncing his ideas off several of his best power users (including his son).
By a couple of months ago, he had refined his system to the place where it would work impressively well with nearly any parametric feature-based CAD system. So, he went to work finalizing his presentation.I had mentioned that Delphi, by patenting some of the elements of horizontal modeling, limited the number of people who could benefit from it. (Worse for them, they patented it, then filed bankruptcy. That didn’t help much.) Richard’s goal wasn’t to monetize his process. His goal was to evangelize it. To help CAD users—both power users and mere mortals—to get their jobs done better.Richard and I had talked, over time, about what he should call this process. At first, I liked the word “robust.” In computer science, it is the ability of a system to cope with errors during execution.
In economics, it is the ability of a model to remain valid under different assumptions, parameters and initial conditions. Those are good connotations. But, then I thought of one of my favorite examples of robustness.
The first time I visited Russia, I noticed that the apartment buildings were built of thick poured concrete. And nearly impossible to remodel.Richard’s system wasn’t robust. It was resilient. So, he has named it the Resilient Modeling Strategy. RMS.So far, I’ve written over 2,600 words, to provide some background on the problems of parametric modeling, and some of the solutions that have been offered over the years. But, after all that, I’m not going to tell you anything more about RMS. At least, not yet.Tomorrow, Wednesday, June 26, Richard will present RMS for the first time ever, at, in Cincinnati, Ohio.
His presentation will start at 9:00AM local time, and will be in room 6 of the convention center. If you’re there, put it on your calendar.
If not, you’ll need to wait until Richard gets back to Phoenix, and I publish a follow-up post.RMS is not anything difficult, or fundamentally new. It’s just an elegant distillation of best practices, designed to work with nearly any parametric CAD system, and simple enough that it doesn’t get in the way. It’ll help you make better CAD models faster.Filed Under:, Tagged With:,June 25, 2013 By. 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 with an interesting concept that they called horizontal modeling. Here’s a description of it from their patent abstract:“Disclosed is a horizontal structure method of CAD/CAM manufacturing where a base feature is provided and one or more form features added to it to form a model. The form features are added in an associative relationship with the base feature, preferable a parent child relationship, but are added in a way as to have substantially no associative relationships with each other.
The result is a horizontally-structured Master Process Model where any one form feature can be altered or deleted without affecting the rest of the model. Extracts are then made of the Master Process Model to show the construction of the model feature by feature over time. These extracts are then used to generate manufacturing instructions that are used to machine a real-world part from a blank shaped like the base feature.”Here’s a picture that makes it clearer:The simplest explanation I can give for it is this: You create a base feature, and bunch of datum (working) planes. You attach all the child features to those datum planes. Viola: no parent-child problems.I admit that I’m not going to do justice to horizontal modeling in this conversation. There’s actually quite a bit to it, and it makes a lot of sense when coupled with computer-aided process planning (CAPP.)Horizontal modeling has a handful of problems. First, it does a pretty good job of killing the possibility of having design intent expressed in the feature tree.
Next, it works better with some CAD systems than others. (When horizontal modeling was in the news, SolidWorks had a problem managing the normals on datum planes, so it didn’t work too well.) The deadliest problem is that Delphi got a bunch of patents on the process, then licensed it to some training companies. From what I can see (and I may be wrong), none of these training centers offer horizontal modeling classes any more.While, technically, you can’t use horizontal modeling without a patent license from Delphi, the concepts at its core are fairly similar to things that CAD users have been doing for years. A few years ago, Josh Mings posted on a couple of online forums that “Horizontal Modeling is just one word for it, you may also know it as Skeleton Modeling, Tier modeling, Sketch Assembly modeling, CADNeutral Modeling, or Body Modeling.” (It’s actually two words for it, but I get his point.)Horizontal modeling is not a silver bullet solution for the problems inherent in parametric feature-based CAD.
It’s just a best practice—a strategy for getting around the problems. It seems to be headed in the right direction, but it suffers from the complexity that comes from trying to fix too many problems at once.Next: AFiled Under:, Tagged With:,June 25, 2013 By.
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 own unique implementations of it.The common thread in direct modeling is to use standard construction techniques when modeling, and feature inferencing (or recognition) when editing. It’s easier said than done. It’s taken about 35 years of industry research to get to the place we are today—where you can click on a face of a model, and the system will recognize that you’re pointing to a feature that has some semantic value. And that’s not even considering the tremendous amount of work that has been required by legions of PhD mathematicians to develop the math that lets you push or pull on a model face, and have the system actually edit the geometry it in a useful manner.For the CAD software, figuring out which way to edit a selection is almost a mind reading trick: A user clicks and drags on a part of a model. What would they like to happen? In some cases it’s easy: Drag once face of a rectangular block, and the system will just make it longer or shorter.
But if the block is full of holes, bosses, and blends, it becomes a lot more complicated. What should the system do if you drag a face so far back that it consumes another feature, and then pull it back to where it was? Should the consumed feature be lost forever, or should the system remember it in some way, so it can be restored?There are no right answers. It seems that no two direct modeling systems handle the decision of what is a “sensible” edit in the same way.While direct modeling absolutely solves the model brittleness problem inherent with parametrics, it does it by simply not using parametrics. Even with hybrid parametric/direct CAD systems, the answer to the parametric curse is still to not use parametrics when you don’t need to.The solution of “use direct modeling when you can, and learn to live with parametric hassles when you can’t” just isn’t very satisfying to me.Next:Filed Under:, Tagged With:,June 6, 2013 By. My friend Rachael Dalton-Taggart, Director of Marketing Communications at (which is now part of ), often has interesting perspectives on the engineering software market.
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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 know each other, from attending shows and conferences over the years.) These email threads end up being rather like a “sitting by the pool at ” conversation, where we get to rant a bit, knowing that the people who are listening actually have the background to get what we’re saying.Yesterday, Rachael dropped me an email, about an application story she’d gotten from Mecsoft. Here’s what she said (with my short comments interspersed in square brackets):“I’m not sure if you would even be interested in this customer case study but I got this from MecSoft, about use of Geomagic Design formerly Alibre Design with ‘Alibre CAM.’ It’s a nice story. What intrigues me is that after the last ten years of people like you, me, Martyn mutual friend of Rachael and myself, industry gadfly, and founder of etc discussing how ‘everyone’ already has cad, there are times when that is obviously not the case and this is one.The more I dig into manufacturing operations, the more I see some realities that are seldom talked about: People coming here to for training in who can barely turn on a computer. (Yes, they use a ruler and calipers to inspect their products.) Companies still on 2D CAD – exclusively.
We have been spoiled with the ‘top end’ stories such as Boeing, Ford and the like who spend millions on and enterprise-wide CAD.Is she ever right. I spend a lot of my time looking at top-end applications, often working my tail off to understand the nuances of their technology. Yet, innumerable companies (much less, individual engineers and designers) are nowhere near being able to afford these tools. For them, moving from using a 2D CAD program such as AutoCAD LT to a relatively inexpensive 3D MCAD program such as Alibre (which was not-too-long-ago acquired by 3D Systems, and rechristened “Geomagic Design”) can be a really big deal.Though I try to cover a broad spectrum of engineering software tools, I get more personal satisfaction out of talking about tools that empower individual engineers and designers than I do talking about tools that empower enterprises.So, thank you, Rachael. You’re right—this is a nice story. And thank you, Mecsoft, for recognizing that simple CAD/CAM tools that don’t cost an arm and a leg can make a big difference for small businesses.Here is the case study, written by Tim Strifler of Mecsoft, telling how one of their customers used Geomagic Design and Alibre CAM to transform his business. Again, I’ve interspersed my comments in square brackets:Alibre CAM: Changing Businesses, One Shop at a TimeBy Tim Strifler, Marketing Coordinator, MecsoftNot to toot our own horn, but we hear success stories all the time about how our customers have utilized our software in effective ways and how it’s helped their businesses.
But our benchmark for a truly satisfied customer changed after speaking to Chris Milligan of Chris began to tell us how our software has “literally changed his business” and that Alibre CAM has “brought his manufacturing capacity into the 21 st century.” Let’s back up and see what lead to Chris’ success with MecSoft CAM software.CRM Fabrication & Repair is a small family-owned fabrication and machine shop located in the hills of Northeast Georgia. Chris told us their story is one of humble beginnings and hard work. He started the company in Longview, Texas, with only a stick welder and a 1978 Ford truck.
Their drawings were constructed on graph paper or on the floor with soapstone. Eventually they were able to get their hands on a student copy of AutoCAD 2D. At that time, their services were limited to what could be welded with a DC stick or TIG welding machine, or items that could be brazed with an acetylene torch rig. Fast-forward through 15 years and a relocation to Georgia, CRM Fabrication & Repair now has four full time employees, upgraded equipment and machinery, and a full machine shop. This includes a recently purchased CNC machining center and a vertical machining center.
I think we all know people like this, who start with basic tools and raw talent, and build it into a solid business, with rabidly loyal customers. One of my favorite examples is, in Phoenix. They’re fabricators at heart, and use Alibre to design everything from fixtures, to stamping dies, to.CRM Fabrication & Repair, of course, has also purchased a seat of both Geomagic Design (formerly Alibre Design) and, which, in the words of Chris, has “transformed their business.”Wheel Finishing StandOver 10 years ago a company approached CRM Fabrication & Repair with a unique product request. The company specialized in refinishing car wheels, and they wanted a stand that would assist in this process. Of course this was before CRM Fabrication had embraced CNC and CAD/CAM software, so creating a unique product was a little more difficult. They were able to complete the product and ship the order, but it wasn’t pretty, and it wasn’t done efficiently.
It was bittersweet when the customer would come back year after year and order more.Chris was happy to have satisfied the customer’s needs, but hated producing them. “I never had the software to build them right or build them profitably.” Still, word got around to other auto shops about these handy wheel stands, and Chris received more and more orders.He eventually had the right software (Geomagic Design + Alibre CAM), and it was time for a redesign! The drawing went from a lunch break napkin to a full CAD model in four or five hours. Thanks to Geomagic Design and Alibre CAM, the product has a more refined design, which allows it to be adjustable, and makes it less expensive to ship. According to Chris, the retail cost for the completed modular units (fully powder coated) is 15% cheaper than the “crudely built units that originally spawned the idea 10 years ago.” This, of course, results in higher profit margins for CRM, too. My guess is that improved profits from this redesigned wheel finishing stand will ultimately more than offset the cost of Geomagic Design and Alibre CAM.
So, a half-day’s use of the software justified the investment.CRM Fabrication & Repair:.MecSoft Alibre CAM: or call 949.654.8163.3D Systems Geomagic Design:Another perspectiveI believe that relatively low-cost workman-like CAD and CAM tools are an important segment of the engineering software industry. CRM gets tremendous benefit from using Geomagic Design and Alibre CAM, without even coming close to pushing the capabilities of the products. But its owner, Chris, never would have known what was possible had he been put-off by the initial price of the software (whether or not he could technically afford it.)Yet, it’s important to keep things in perspective: cost is not everything.There may come a day when Chris adds a few new machines to his shop.
Maybe a 5-axis machining center, a Mill-Turn, or a waterjet? When you have a couple of hundred thousand dollars or more wrapped up in machines, the economics of CAD/CAM software change. Improved capabilities and productivity outweigh initial cost considerations.I am pretty confident that 3D Systems is investing in substantially improving Geomagic Design. While, under Alibre’s ownership, it languished for lack of financial resources, that’s not the case now. 3D Systems has the money, technology, and vision to take Geomagic Design to the next level.
I don’t know what that level might be, but consider that Geomagic has deep expertise in point clouds, voxels, and NURBS. Might that provide a hint?MechSoft already provides an upward migration path from Alibre CAM, to its flagship product family. The top of the line Premier version includes high-end capabilities, such as 5-axis swarf machining. (This is a method where you use the side profile of the cutter for contouring. Incidentally, my friend Patrick Hanratty invented 5-axis swarf machining.
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It was quite a feat of mathematics–which probably explains why it’s still considered a high-end capability even today. The article tells a bit of his story. It was written, coincidentally, by the same Rachael Dalton-Taggart I mentioned at the top of this article.)Filed Under:, Tagged With:,April 30, 2013 By.
Almost 2 years ago—in July, 2011—3D Systems acquired Alibre, a developer of budget 3D parametric MCAD software. It was just one of a large number of acquisitions that 3D Systems made over the last several years, and, for awhile, it appeared that Alibre was getting lost in the shuffle.Alibre has now found a new home, and a new name. It has been folded into the 3D Systems Geomagic group, and its suite of products, formerly known as Alibre Design, is now known as Geomagic Design.
Will this make a difference to the product? I think the answer is yes.If you look back at Alibre Design before it was acquired by 3D Systems, it was a bit of a mess. The software was functional, but suffered from inadequate investment in development.
A lot of the work on the software seemed to be targeted at filling checkboxes on comparison charts. The software didn’t feel like a quality product. It may be that 3D Systems knew this before they bought Alibre, or they may have figured it out after the fact. But, no matter: with the financial stability of a new corporate parent, Alibre’s developers were able to focus on doing what needed to be done. They went back, and fixed many of the mistakes from the past, making the software much cleaner and more consistent.The 2013 version of the software formerly known as Alibre Design, and now known as Geomagic Design, just shipped on April 17.
While the in the software is 60 pages long, there are two areas of improvement that are quite significant. The first is in consistency of operation. The software feels much better thought-out in the details of operation. Menus, dialogs, and pop-ups have a consistency to them that makes using the software a lot more pleasant than it used to be. The second area is 2D drawing. It’s been cleaned-up and filled-out, so that now it’s possible to produce really high-quality drawings without undue pain.Let me put all this in context: It used to be that the main reason why many people would buy Alibre Design was because it was what they could afford.
And, though it would get the job done, it was more irritating to use than it should have been. With this new version of Geomagic Design, you’ll get your work done easier, with more stability and less irritation, for the same bargain price—starting at $199, up to $1,999. (To be fair, even the most popular CAD systems are more irritating to use than they ought to be. But that’s another article, isn’t it?)The development work for this release was largely completed before 3D Systems acquired Geomagic.
So, to be fair, the Alibre development team should get the credit for this version. Starting now (or, actually, a month or two ago), the Alibre team will be working under John Alpine, the VP of Engineering of the new integrated software division at 3D Systems (Geomagic, Rapidform, Alibre and probably more.) Alpine is a CAD industry veteran, with serious technical and management chops. This bodes well for the future of the software.3D Systems GeomagicNote: Yes, the images still say “Alibre,” and so does the website. The rebranding to Geomagic Studio just happened very recently, and some things aren’t done yet.Filed Under:, Tagged With:,August 31, 2011 By. According to Gerri Jordan, Yar Golf’s president, “The GW1 putter is also tied for the number one spot in the categories for accuracy, alignment, and sound compared to putters that cost thousands of dollars more.”The Yar Golf engineering team started using Alibre Design 3D CAD software to design the GW1. Jordan added, “We were able to acclimate the Alibre Design Expert and go from written theory to full testing prototype production in less than 90 days.
Alibre’s product support is superior and always had the solution when we encountered an issue.”The Alibre models were translated into CNC code for machining prototypes and eventually for production of a precision mold. An ISO-certified aerospace facility cast the putter heads in stainless steel. After rounds of testing, Yar Golf put the design into full commercial production.The putter is also important apparatus in what is called by the USGA as Adaptive Golf for players with disabilities. The putter’s improved balance offers greater control for golfers with prosthetics. Even for players who have trouble bending over, the GX1’s wide footprint and circular openings can be used to pick up or place balls, markers, hole flags, and other clubs.AlibreYar GolfFiled Under:, Tagged With:,May 21, 2010 By. Alibre announced Alibre Design Personal Edition (PE).
The product is a low-cost, easy-to-use 3D design tool that inspires people to become entrepreneurs and set-up their own businesses by creating gadgets, products, and inventions in their homes and garages. Alibre Design PE will be demoed for the first time at the Maker Faire, the world’s largest conglomeration of do-it-yourself (DIY) exhibits with an expected draw of nearly 90,000 people, held May 22-23, 2010 in the San Mateo County Event Center, San Mateo, CA.Alibre Design PE delivers the entrepreneur and hobbyist an industrial-strength, parametric solid modeling system with integrated 3D solid modeling, part and assembly design, associative 2D drafting, and STL export all at a hobby-friendly price. Design it, document it, change it around, perfect it, and then make it. Richardson, TX – Alibre, Inc.
Announced price cuts to its line of 3D CAD software. Alibre develops and markets Alibre Design™, a powerful parametric 3D/2D design application. The entry level package, Alibre Design Standard, is now $97 (down from $1000) and includes full 3D design and associative 2D drawings, along with Alibre Translate (formerly $499), an import/export suite that supports Solidworks®, Pro/Engineer™, Autodesk® Inventor™, SolidEdge™, Catia®, and Parasolid formats in addition to all neutral CAD formats.All levels of Alibre Design software and software maintenance have been reduced in price, positioning Alibre products as the extreme value leader in the design and manufacturing industries. Has granted authorization to CADDIT Australia to offer the latest version of Alibre Design version 12 with at least AUD$1200 saving (84%) for these last few weeks of 2009. Why are we posting this to our blog? 1.This is not an Alibre 11 sale. This sale applies to the newly released, including the features discussed earlier on our blog HERE.
2.It’s a near give-away. Even if a company already uses another 3D CAD/CAM system, Alibre Design easily supplements as a stand-alone sub-assembly designer, detail drawing workstation or even just a STEP or DWG viewer.Pricing for Alibre Design from CADDIT Australia until 12AM 1 January 2010 EST:Alibre Design Standard: 239.84+GSTAlibre Design Standard: 859.00+GSTAlibre Design Standard: 1199.00+GSTA full version of. If the user registers our download version using a valid address in Australia, you can buy at this sale price until 1 January 2010 12 AM EST.There are also some discounts offered on.
Sydney, Australia – CADDIT announces that the Australia localized version for Alibre Design is available for free. Alibre V12 offers new over V11, particularly when working with large assemblies and in “shaded & visible edges (wireframe edge)” graphics mode.
CADDIT recommends Alibre Design V12 as Alibre’s strongest feature/dollar CAD value product release yet. A full list of enhancements can be read in the Alibre Design README document after installation.It’s worth noting that a few adjustments have been made in packaging. Alibre Design Expert now includes (for reading CATIA, Inventor, Pro/ENGINEER, SolidWorks, SolidEdge etc) free. Alibre Design expert also includes Alibre CAM 3 axis CNC milling, Alibre Vault PDM, Machinist Toolbox and Alibre Motion for mechanical.Both Alibre Design Expert and Professional versions include a single license for Algor DesignCheck single part linear FEA, direct editing, extended part libraries and photo-realistic 3D rendering studio.Current users of Alibre Design 11, as well as those who recently took advantage of the recent Alibre Standard promotion sale, may, logging in and following the instructions to download the new Alibre 12 trial version.
NOTE: Alibre 11 users in Australia will need paid and active Alibre Maintenance to upgrade to version 12. Alibre 11 users may still buy into.The full procedure for Alibre 11 upgrade to version 12 is also available in this. Comments about this new release of Alibre Design can be posted to our new.
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