I don't understand that I have to built the axes xx, yy, zz every time I create a part.
Is it so complicate to have them as soon as I get the empty part ?
And I don't understand that I have to :
unfix the first part I insert in an assembly, and to create a first constraint to have Origin of the part = origin of the assembly and axles aligned,
because this first part lands at random place.
This kind of detail makes SW really very uncomfortable, and gives the impression of a labyrinthine system which was plastered n times (but perhaps it is) ....