Good morning everyone.

I'm here to ask help for the rib feature,.

I spent some hours trying to use the rib feature but still falls on the error "not bounded properly"

Would someone kindly teach me the right way to do it?

Here is the photo of the sketch I have to make and the project file.

Things I have done so far

- tried to make a plane parallel to the rib direction, and tried to make the limiting line by piercing the cylinder at some defined point (bounded error)
- tried to join directly from the bigger cylinder to the smaller one (bounded error)
- tried to join from the smallr cylinder to the bigger one (rib isn't the one asked for)

SW: Solidworks 2016 Student Ed.