Re: Industrial Designers?

From: Kevin Robertson (
Date: Tue Jul 22 1997 - 18:36:47 EEST

>My exp. with Alias in the product development/ID/design phase is that is is
>very important to UNDERSTAND when to STOP using Alias... I understand and
>fully appreciate the neccessity of Alias... However, Alias is not a CAD/CAM

I disagree to some extent, we have had success importing Alias into CATIA
for machining and CAD/CAM.

>Importing Alias Surface files to PRO-E can create more work and extend the
>developmental time-line, depending upon the complexity of the design.

Evans and Sutherlands CDRS is probably a better freeform tool than Alias for
CAMAX Camand also is a very powerful surfacing package that can be used to
clean up files for importation into Pro-E.

>I have rebuilt simple parts in PRO-E because the surface geometry was not
>"truely flat", "square" etc.
>Alias is a excellent "front end" design tool. However, the surfaces created
>are not always truely closed surfaces. Specifically, the edges where
>surfaces meet are not seen as "closed" when importing to PRO or SDRC.
>Unfortunately, RP machines and systems must have a closed .STL file to
>produce a good part.
Alias, like CATIA can be difficult getting closed surfaces and volumes. In
most cases it depends on the experience level of the CAD operator and the
related quality of the file.
As they say, it is a poor musician who blames his instrument.


Kevin Robertson
ARRK-San Diego,CA

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