When i try to create rib between two cylindrical surfaces with two endpoints of sketch (line) is coincident with cylinders it fail.
i can workaround to get rib by using extrusion and then cutting it. But i wanted to know what exactly goes wrong.
Rib can't be created due to the " Zero thickness geometry " error, you need to extend the sketch inside the cylinder.
Add a line at each end to centers of cylinders. You should then observe why it would not work without these lines.
You're absolutely true
I am aware with that... thanks
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