Q6. How can i obtain the axis of a circular solid in the sketcher mode?

• For example, we are going to create a groove with the same axis of the model (Fig1). First,  we create a new sketch;

• Click the icon "Project 3D elements" (Fig2);

• Select the circular surface of the 3D solid. Now the axis is extracted (Fig3). It is a projected image from the 3D, and so it changes with the axis of the 3D.

  (Fig 1)

  (Fig 2)

  (Fig 3)

  (Result)