Hi Booleano.
to get the 3 hinges shown on your photo it was necessary to modify
your case profile so that it touches the hinge axis in 3 places.
Basically if you create a profile curve and the axis line you can mirror
about the axis to get the case top then rotate it about axis to get what you want.
Anyway attached is my file.
hope this helps.
Cheers
Barry
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