How to model an axial blade without a hub?


I read an article about hubless propellers in comparison to a propeller with a hub.
Then I wanted to model the geometry but I don't know how I extrude the sketch, so the tip is spiky. I tried to use the sweep function but that doesn't work either.
Is there any trick I can use?

Thank you !

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1 Answer

It's ok, think I found a way. Tried the Sweep again. Didn't think that I can sweep an arc.
But now it looks much better to me.

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