You can either select an existing sketch (2D or 3D), or you can stitch the positioning points of the drillings on the fly. In this case all the points must be on the same plane.

If you wish to select another plane for the same function, simply click on the Add.


 

When the points are created, you can use the sketch features to add relationships. Once this relation is added, you must remember to reposition the mouse in the graphical part so that the calculation is done.

It is also possible to immediately constrain a sketch point (not of an existing sketch), to do this press Esc then select the point to constrain it. Click again on the button Add to place another point. And so on.

All the selected points will have the same size. You have to start again as many times as necessary to have different sizes.