I want to find a nice object to print so I had a look at the Thingiverse website.
And finally decided I was going to give this one a try.

Sorry for the original designer but I really don't like the neck cut at all !
So I kind of cuted it in a more elegant way IMHO.

Here's my "neck revisited" version next to the original :

And that's my first try.
Unfortunately the print stopped without reason at 3/4...
When it happens, the extruder head doesn't move any more (axis motors are turned off) BUT the extruder motor keeps extruding.
When this kind of crash arrive, you'd better be in front of your machine !

Second try was a success !

<photo to come>