Sketch has more than one open contour

I have a 2D sketch which has straight lines and splines - those
entities are together supposed to form a closed shape, but I suspect
there are gaps between the ends of the entities. When I attempt to
extrude the sketch, I get "sketch has more than one open contour",
which I suspect is because there are gaps in the sketch.

I can't figure out how to merge or join the individual entities into
one closed shape, and/or to eliminate the error in extruding. (I
suppose
to close the gaps the splines would have to adjust some).

Note I tried to use "repair sketch", but it didn't seem to do
anything ....

 

Hi Gus,

Try Tools > Sketch Tools > Check sketch for feature... It might help..

HTH
Kav

 

Or: RMB and select chain to identify gaps (where selection stops). If
everything is selected, make one element temporarily construction
geometry and you will be able to identify the last gap.

Thomas

 

OK, I tried that. Feature usage is "base extrude", Contour
type is "multiple disjoint closed", and the resulting message is
"sketch has more than one open contour". I'm assuming the
problem is "gaps", but I don't really know what the error
message means .....

 

Check to see if you have any short lines dangling from any corners.
This sometimes happens to me, and you have to zoom in to every
intersection to find them.
Brian

 

Duplicates can also cause the failure, as can very tiny objects, or
accidental ones outside the normal viewing area.

Sometimes I draw a circle around suspected intersection problems and
Extend those lines and then Trim to revalidate the intersection.

Bo

 

In the 2D to 3D tools there is a sketch check tool that helps find
duplicates and gaps.