Cast article and a method of its manufacture

A cast article including a frame that in use of the article defines an aperture;

• and a further component that is in use retained moveably captive relative to the frame, the further component including protruding therefrom on opposite sides a pair of respective protuberances each rotatably received in a corresponding, closed-sided recess defined in the frame, the frame being assembled from first and second frame members the first of which includes formed therein substantially coinciding with the in-use location of at least one of the protuberances an open-sided recess having an opening in a side thereof;
• and the second of which includes protruding therefrom a closure that closes the opening in the side of the open-sided recess to define a said closed-sided recess.