"Martin,
Good question. I guess it depends on your definition of “direct modeling”. I think being able to control geometry is important in any CAD tool. Constraints in a direct model are very different than in a history-based model. In…"
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Paul Hamilton replied to Dennis Nelson's discussion 'Direct Modeling Problem'"Dennis,
For the minor radius use the Offset function. To change the major radius requires some constraints - which are not available in the Personal edition - unfortunately."
Paul Hamilton replied to Dennis Nelson's discussion 'Direct Modeling Problem'"The torus has always been a bit of a challenge for direct editing. There are several parameters that are involved with the torus; the angle, and the major and minor radius. With direct editing most tools can access and modify the angle, as Blake…"
Paul Hamilton posted a videoIntelligent Concept Design with CoCreate Modeling
An example of quick and easy concept design of a fixture assembly, with the capture of design intent as we go. For more info on this video check out my blog ...
Paul Hamilton commented on Paul Hamilton's video
Direct Modeling and Freeform Surfaces - An Introduction
"You can read my blog post explaining the video in a bit more detail at: http://bit.ly/4VFTMT"
Paul Hamilton commented on Paul Hamilton's video
Predictability With Direct Editing #2
"Poorvesh, I just uploaded another video regarding freeform surfacing. I know it still does not answer your questions, but I will try to take the example further to attempt to answer them in future videos."
Paul Hamilton posted a videoDirect Modeling and Freeform Surfaces - An Introduction
This video shows a quick and simple introduction to the creation and manipulation of freeform surfaces using direct modeling and editing techniques.
Paul Hamilton commented on Paul Hamilton's videoPredictability With Direct Editing #2
"True, it is slower. When working with analytic geometry (planes, cylinders, …) we're interacting with only a few elements (vertices, edges and faces). When working with freeform surfaces we're interacting with potentially many…"
Profile Information
- About Me:
- Worked at HP as a machinist, then an engineer. Got involved in CAD and eventually started using SolidDesigner. Then worked at CoCreate for a while. Started my own consulting company n 2006. And just recently started working with PTC.
My postings on this site are my own and don't necessarily represent the opinions, positions and strategies of my employer or any other company.
- Country:
- USA
- Company:
- PTC
- Online Profile (e.g. Linkedin, Xing, etc.):
- http://p-hamilton.blogspot.com/
- CAD System used:
- CoCreate Modeling
SolidWorks
NX6
Spaceclaim
Think3
Inventor
Paul Hamilton's Videos
Comment Wall (3 comments)
- At 10:01am on January 6, 2010,
Frank Lipari said… - Paul! The video you posted is awesome. Thanks for being an integral part of making SpaceClaiming what it is and keep up the good work!
- At 2:48pm on December 11, 2008,
Tyler Wesley said… - Just want to say, that your blog came up during my search for modeling software when I was evaluating different kinds. I had had experience with Inventor and Solidworks but my new employer only owned a 2D Autocad which was like going back to the stone age after you have done 3D.
Anyway, you had a lot to say about explicit/direct/natural modeling, which I had never even heard of. I had just assumed history trees were the way it was done. Thank you so much for opening my eyes. These programs eliminate everything that had frustrated me with Inventor and Solidworks.
It's funny to me, (dating myself here) I remember debates about was 3D CAD really going to be faster/better than 2D CAD, and I thought at the time, well, of course isn't it obvious? That was before struggling for hours monkeying through a history tree. Now its funny to me that this history vs.explicit debate exists, because it seems obvious which is better. That being said, CAD is like religion, to each his own. Anyway, you opened my mind and I can't thank you enough.
- At 7:01am on October 23, 2008,
WikiCAD said… - Hi Paul, welcome to SpaceClaiming.
I'm glad to notice that you have already started to look around and joined some discussions.
I suggest you to join some groups too, based on your interests. And please feel free to invite friends and colleagues to this community, if you wish.
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