Just out of curiosity, what would you use the curves for?
While it is extra overhead, for most people it's not an issue. Just for fun
I ran a comparison test. The task was to create a G1 continuous trim curve
on the round surface in the attachment (don't know if you can read the
surfaces in the .sat in 5.3). Using a software that will create a curve on
surface it took about 50 seconds (pick two points, constrain tangent to
edges, constrain to surface). Creating the trimming surface in inventor
took about 1 min. 55 seconds (create work plane, project edges, create and
constrain spline, extrude surface).
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"zdzislaw cieslak" wrote in message
news:4086eadf_1@newsprd01...
> Thanks for your reply.
> I'll try intersection method but it seems to me rather laborious - it
> demands great number of work features.
> Frankly speaking I hoped to find in AI8.0 something like a drawing on a
mesh
> with the aid of snap, for sure less precise but easier and faster.
> Regards,
> Zdzislaw Cieslak