The Child Seat Buckle is a product development process based around a design class at University for utilising... "Methods to progress from chosen concept through to developed concept. Introduction and application of methods for initialsizing, component, manufacturing technology and material selection trade-off’s."
Developed Concept 1 was chosen to be the final concept after a series of concept evaluation processes; the evaluative techniques consisted of a Controlled Convergence Matrix (CCM) and Weighting & Rating Matrix (W&R).
The specific materials and processes were chosen for their thorough use in the industry combined with their strength and durability. So too, their ability to be recycle - driving a sustainable design. The costs of each material and process have been referenced in the full project linked above.
For a 1000 piece start-up, approx. maufacturing cost = £2,350.