After hours of tutorials, and the first help of Carlo, I'm looking in a way to force an object, like a "bone" (so not exactly a regular cylindre, with a lot of meshs) to shape itself into a sharpe path of 3 or 4 points (path converting in meshs after alt+C, let s call it "a guide"). So the idea is to use this guide like a tool to shape the bone object linked and without deformation (like a solid object) as you can see :
So to begin with... it s difficult : because it s not a bezier item, it s a complexe cylindre. So I can t use "bevel object" with an object like that...
After this step, I think there are two possibility to see the problem :
1) You can superpose pieces of the bone if they split on an exact point of the guide (so exactly on the point between two lines). I will know how I have to "cut the bone" (so remove littles triangles) to shape it exactly like the guide (with boolean union modifier for exemple!), but like it s an object more like a triangle long bone object, one of its faces is large and have to be always at the bottom part of the modeling...
So 2) No superpositions but a complexe serie of movements (spin, translation,..) of the pieces on after the other to touch themselves in a "solid" mode, to force the large face to be always at the bottom... Like that the little triangles removed will be much more smaller +++
I know it s very difficult to have the 2) option. S I think the first one with boolean modifier will be more than enought (but if you have an idea of course..).
Thank you so much for your time and help in this difficult modeling!!!!!