I think that this is a bug. In this sketch the left lobe is the primary lobe. The right lobe was created by using a circular pattern. I can cut the left lobe but I cannot cut the right lobe. Obviously the right lobe is not closed but should be because of the way that it was created. Can developers look at this please.
Hi! This is indeed a known issue with the old profile recognition tool. Sheet Metal environment has not yet adopted the new geometry-based profile recognition tool. Any patterned or mirrored sketch without a coincident constraint is not considered a closed knot. The simple workaround is to use regular Extrusion Cut instead.
In the meantime, we are working to adopt the new profile recognition tool in Sheet Metal for the future release.
Many thanks!
