October 5th, 2007, 03:58 PM
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Moderator
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Join Date: Jul 2006
Location: Maryland, USA
Posts: 339
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Amnon,
Sorry, but I'm still confused by your terminology  the Project 3D Elements is a Sketcher command, which is normally used within the Part Design workbench. When you say "Assembly Design", I'm not sure if you mean the Assembly Design workbench or you mean you're working in "the context of an assembly of parts."
I think you're asking if Project 3D Elements is a useful tool?
Absolutely, because it creates a link to whatever it is that you are projecting. So if the parent element changes, then the linked elements (the projections) change automatically.
Assuming you are creating the External References on purpose, these Links are very powerful things in CATIA, and they will really help you when you make to your designs by automatically propogating the change to all the effected features/parts/assemblies/drawings/ etc. But you must be more careful when you use Linked geometry - otherwise they can hurt you instead of helping.
If you don't know why you're getting the External References, and you're not sure what they are, then you could have lots of problems when you try to modify your design.
I'm not sure where you got your CATIA training, but this is one area where proper training is very important and can help you become a better and more productive CATIA user.
Last edited by MrCATIA : October 5th, 2007 at 05:10 PM.
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