Thanks for the link and sorry for bothering you with it, I actually found that the link was on the youtube page right after I posted.
So I made a quick and dirty prototype to give it a test:
[attachment file=121165]
It worked very well, so that’s great!
I think I will make a few mods to it, like having separate controls for the Z and XY, maybe a potentiometer and a screen to set the speeds, an emergency stop, some stuff like that. And also design a casing.
Thanks a lot for the inspiration !!