Questions to ask yourself before you start :
What is the reference component ?
The wheel axle.
What are the complementary components ?
The wheel, needed two instances :
To view the different stages of the example, click in order on the boxes in the graph opposite or on the arrows at the top of the page.
Although we don't have to do this, we will "wrap" each component in its own assembly container in order to prepare the future constraint elements we will need (note that it will always be possible later to modify or add).