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tbuelna (Aerospace)
15 Jan 07 21:20
I have a .cgr file I would like to save as a .igs file.  How is this done?

I tried inserting the .cgr file into a .CATProduct, but when I save the .CATProduct as a .igs file, the .igs file is empty.

Can anyone help? TIA
Azrael (Automotive)
16 Jan 07 5:30
The best way for me so far is to use the Silhouette feature in the DMU Optimizer workbench to create igs of cgr's.
Helpful Member!  tbuelna (Aerospace)
16 Jan 07 10:33
Thanks Azrael.  I don't recall seeing .igs as an option under the save function in silhouette, but I'll look again.
Azrael (Automotive)
17 Jan 07 3:12
No you are right, sorry, you don't have a igs option. I use stl format to get the files to suppliers. In my case I use it for ergonomic manikins.
DBezaire (Automotive)
17 Jan 07 10:35
As far as I know CGR - Catia Graphical Representation file.  You would have to rebuild surfaces from the triangle mesh.

Regards,
Derek
Azrael (Automotive)
18 Jan 07 3:58
We tried to surface reconstruction of cgr for our reference geometry. We used "Digitized Shaper Editor" to import and create mesh and then "Quick Surface Reconstruction" to reconstruct the surface. Many times we had to use DMO and silhouette first and the import it to DSE. The reconstruction it self could prove very tricky in some cases, so we chose to use stl, a format that all systems can read even systems used at styling.
itsmyjob (Mechanical)
19 Jan 07 9:49
Azrael... you're lucky to have access to all those licenses...

Eric N.
indocti discant et ament meminisse periti

Azrael (Automotive)
22 Jan 07 7:50
Don't know if I'm lucky, I think we have most of the licenses but that will only show you how little you know the system. The department I'm at does PLM Development with some DS resources.

This case with CGR i have brought up to DS attention but nothing really happens. Even our DS resorces don't have a better solution then using STL, so we use that basicly to get information to our styling department regarding packaging, kinematics and ergonomics.

If somebody has an other approach how to make CGR usefull outside the DS sphere I'm also interested.
tbuelna (Aerospace)
22 Jan 07 23:26
Azrael,

Here's the work-around I finally ended up with.  I used the simplification function under DMU and saved the simplified file as a .model file (instead of a .cgr file).  I then opened the .model file and copy/pasted the .model solid into a CATIA V5 .CATPart file.  I could then save the .CATPart file as a .igs file.

It's kind of a pain, but it worked.  Thanks for all of your help.
Azrael (Automotive)
23 Jan 07 4:08
Have you checked the difference between Silhouette and Simplification? I have noticed that there could be some significant differences in quality. Good idea to use .model to get to igs. A star from me winky smile

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