Curved sheet metal with oblongs

Hello, I would like to make the following piece but I don't see how to make the oblongs once the extrusion is done
image.jpg

Make the sheet metal part, unfold it, make the oblongs and then fold it back.

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Hello 

I know that there is a projected sketch or a projected curve, but I won't explain how it works...

Good luck.

Thank you for your answer, but the problem is that I've been resuming solidworks recently so I'm a bit lost.. I can make the sheet metal in sheet metal by tracing the curve but on the other hand I can't unfold

Hello

What version are you in?

For a rolling sheet metal you have to select the edge which is not curved

then tab sheet metal unfold, on the unfolded part do the oblong functions then fold

EDIT:

http://help.solidworks.com/2017/French/SolidWorks/sldworks/HIDD_FEAT_SM_FOLD_UP_DOWN.htm

Here to select an edge (rolled sheet)

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Version 2015 Remrem

Thank you for your answers 

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I would have sent you an example but I'm in 2019...

Try to follow the advice of sbadenis.