unable to create this feature because it would result in zero thickness geometry

Hello!

I try to extrude cut and get following message":
unable to create this feature because it would result in zero thickness geometry
How to find, where is those f... zero thickness geometry??????????
I redraw sketch, change sketch plane, nothing to help :( :(.
is some option, who shows, where is those problem

1 Answer

check for very small intersection in the sketch and get rid of them!