A tiltable mounting device is for mounting cylindrical objects with a top surface and a lateral surface, and for tilting the objects relative to a reference plane. The device has a frame, and one or more mandrels, each configured to mount a cylindrical object. Each mandrel is rotatable about a longitudinal axis, and is tiltable in the frame between first and second positions. The longitudinal axis of each mandrel in the first position is oriented perpendicularly to the longitudinal axis of the respective mandrel in the second position. In the first position, each mandrel is oriented with the top surface of the object in the reference plane, and in the second position, each mandrel is oriented such that the lateral surface of the cylindrical object is tangent to the reference plane.