I suggest you not to print this bracelet until I finish to modify the project.
I am in doubt about the closure system that could need some fixing.

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Update:
I printed the first file: the box is too small to be printed successfully with my printer (3 mm filament, 0.5 nozzle diameter). Walls are thin and too fragile.


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Update:

I uploaded a new bracelet with smooth shapes and a more printer-friendly closure system.
Soon new updates.

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Update:

I printed bracelet3.stl and it's a solid piece with a safe closure system.
I sliced it with Skeinforge, as Slic3r seems to pass too many times from a far vertex to another and probably make a mess of plastic.

The result is visible in the photo.
I printed it yellow for now.

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Update 10/12/12

I uploaded a new bracelet (braccialetto 4). It's more comfortable to wear and the box is smaller.

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Update 21/01/12

I printed the last project (braccialetto 4) in white plastic, and added the photo.
As it is, it fits the medium wrist of an adult woman.