strenghting rib
i think this may be useful ...
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Step 1:
consider a part like this
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Step 2:
sketch the profile of the rib ..
it could be anything , in my case a spline -
Step 3:
click Rib feature , from the features tab
make sure that the arrow mark points towards the model , u have already created -
Step 4:
click ok ...
thats it