Surface from boundaries..

Hi,

I'm trying to create a surface from boundaries. I created an oval shape
(not an ellipse) datum curve and at each quadrant I created a line datum
curve that goes towards the interior and passes through the oval shape datum
curve.

With the surface from boundaries I took the four line datum curves in the
first direction and select the oval shape datum in the second direction but
I get the message "Boundary curves do not form a closed loop." So I unselect
the oval shape datum curve and exit from that menu. What I get is not a
closed surface (the line curve 1 and line curve 4 are not joined) and the
edge that should pass through the oval shape doesn't? Maybe I'm not using
the right feature to do this? Any help will be appreciate it, thanks in
advance.


Pablo,

 

YOu have to select your curves differently. For first direction, select
one half of the oval shape, then select the center curve in the same
direction, then the other half of the oval. Picture this almost as if
you're doing a revolve with weird sections. For your second direction,
pick the curve perpendicular to the center curve you picked for first
direction.

Cj

 

it might actaully be easeier to create this in quarters, and then mirror it
twice. Proe might have prblems with the the two halves of the oval being
tangent to one another.
Depending on how you want the surface to look, create a datum ribbon on the
oval curve a well, and make the quarter tangent to that boundary. Also make
the inside edges for your quarter normal to the sketching plane ofthe
curves.
cheers
Craig