The only function fully capable of following 3D curves or
splines through points is the variable section sweep.
he other functionality, like sweeps and blends, is for fo
llowing planar curves. Swept blends are a little more cap
Surfacing, especially ISDX, is the most capable of
producing complex geometry.
e in message
sweep or the sweptblend could not t
ake their cross section throughout
their path while work
ing in three dimensional sketch, why???
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