Primitive

A geometric model for a component model is built from a set of geometric primitives of different shapes. Plates modeled via Insert > Plate can have only one primitive.

If you start a primitive (cylinder, cone, eccentric cone, flange, dish) from a circular end point of another primitive by selecting Refer or pressing P, the radius for the new primitive and the direction are copied from that end circle. If the end circle is parameterized, then the radius of the new primitive will get the same parameterization.