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During the designing and making processes it is important to gather feedback from the client and users. Refining the product based on this feedback helps solve any problems before production begins.

Designers use many techniques to create products and solve problems. Design and development involve creating working drawings and parts lists to enable a third party to manufacture the design.

Manufacturers need to consider the form, function and cost of designs before production. Designers need to consider safety, availability of materials and minimising waste, while maintaining quality.

Evaluating ideas, models and feedback is an ongoing process, utilised in continuing to adapt and improve products to make them more useful, appealing and profitable.