Peter Gein writes:
>>Sadly Steve, most solid modelors do not offer this capability, especialy the
inexpensive ones. One point worth making here is that if you use some nice
features such as bosses, tapered holes, and ribs for example, then when you
blast this out to another CAD system via IGES, you lose the associativity
between these elements. For example, try to move the boss over 2" on the IGES
file. You will end up having to move each surface. Try converting the IGES
surface into a solid, and then remove a counter-bored hole and surrounding boss.
You will have to make quite a number of edits to do this, whereas in the
original system, you can simply remove these elemens from the state tree and
recompute the solid. A state tree is simply a recording of each feature used to
construct the model together with their relationship to other features.<<
Isn't STEP supposed to solve some of these problems? Anybody know what the
statup of STEP is? Who has implemented it?
Steve Farentinos
PML, Inc.
201 West Beach Avenue
Inglewood, CA 90302
310/671-4345
fax: 310/671-0858
sfarenti@scf.usc.edu
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