By the end of this topic, you should be able to...
construct and interpret aesthetic and functional prototypes at different levels of fidelity, including the considerations of scale, shape and space.
Guiding Question
Why is it necessary for designers to prototype ideas as part of a design process?
💡 Did You Know? Architects spend weeks perfecting miniature building models—then watch their designs fail the moment they're built at full scale, because humans don't experience space like dollhouses.
Why Make Physical Prototypes?
Constructing physical prototypes isn't just about making things; it's about discovering what you didn't know you didn't know. A 1:10 scale model might look perfectly proportioned on your desk, but build it life-size and suddenly doorways feel claustrophobic, controls are unreachable, or visual sightlines fail completely.
This is why designers deliberately prototype at different fidelities:
Rough foam blocks test basic shape and space relationships early
Refined appearance models validate aesthetics and scale perception
Functional prototypes prove mechanisms work under real forces.
Each fidelity level answers different questions: Does this form communicate the right emotions? Can a user reach all controls? Will this fit in its intended environment?
Building prototypes forces you to confront physics, ergonomics, and material behavior that CAD models politely ignore. But equally critical—you must interpret others' prototypes: reading design intent from a crude mock-up, understanding assembly logic from a partial build, or recognizing performance limitations from material choices. This two-way literacy—making and reading physical artifacts—is how design teams collaborate across disciplines and continents.
Case in Point
When designing the Guggenheim Museum Bilbao, Frank Gehry's team built over 300 physical models at scales from 1:500 (site context) to 1:50 (interior spaces) to full-scale facade mock-ups. Each scale revealed different truths: miniatures tested urban integration; mid-scale models exposed circulation problems; full-scale prototypes proved titanium cladding would actually curve as calculated. The building's success depended on strategic prototyping at precisely calibrated fidelities.
Learning Goals
In this topic, you'll learn to construct prototypes strategically—matching fidelity to design questions—and interpret physical models critically, developing the hands-on problem-solving skills that will define your IA project's development process.
Linking Questions
When creating physical prototypes, which ergonomic considerations should be taken into account? (A1.1)
To what extent are user-centred research strategies useful to gather feedback on models and prototypes of proposed design solutions? (A2.1)
How do designers use their knowledge of prototyping techniques to ensure effective modelling and prototyping? (A2.2)
Which aspects of material properties can be explored through modelling? (A3.1)
How can information about a proposed structural system, such as a product housing, be gathered using CAD modelling and contribute to the development of a design solution? (A3.2, B3.2)
How effectively can mechanical systems be mocked up and tested using modelling and prototyping? (A3.3, B3.3)
How can effective electronic systems be modelled virtually? (A3.4, B3.4)
How does the development of prototypes inform the choice of manufacturing techniques and production systems for a product? (A4.1, B4.1)
How can modelling and prototyping be used to inform the development of a product following a user-centred design (UCD) strategy? (B1.1)
To what extent is modelling and prototyping essential for inclusive design? (B2.2)
To what extent can the same materials used for modelling and prototyping be used in the material selection of a commercial product? (B3.1)