Hi Olga, yeah there are some problem areas in the bottom of each of these shapes, which is likely to be the thing that is preventing filleting from happening.
Even the first shape has a problem area, if you use Edit/Separate on the shape and them move the pieces away from each other, you can see this kind of extra sliver:
Anyway, those are likely to be causing the fillet problems. I'm not quite sure if I understand which way the sweeps were done, I will take more of a look at that next.
- Michael
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