Physicality refers to the three-dimensional, tangible qualities of a product: its form, weight, texture, ergonomics, material feel, and structural integrity. Graphical concepts communicate intent but cannot fully test physicality — only physical models can.
Mock-ups
- Low-fidelity physical representations using available materials (cardboard, foam, clay, timber off-cuts)
- Purpose: test form, proportion, and ergonomics quickly and cheaply
- Do not need to use final materials or processes — speed and low cost are priorities
Material samples and trials
- Cut, fold, bend, join, finish, and test samples of candidate materials
- Purpose: understand how the material behaves under the intended production processes
- Document results: photographs, notes on workability, surface finish, joint strength
Scale models
- Proportional replicas at a reduced scale
- Useful when the full-size product is large or expensive to produce in early trials
Ergonomic testing with models
- Physical models allow end users to hold, operate, or wear the concept
- Reveals grip comfort, reach, clearance, and accessibility issues that drawings cannot
3D printing for concept models
- Rapid production of complex geometries for form and ergonomics testing
- Not necessarily the final material — but accurate in form
Refinement responds to findings from testing and feedback:
- Adjust dimensions (mock-up reveals handle is too thick for intended end user)
- Revise joining method (tested joint failed at required load)
- Change surface finish (end user found textured surface uncomfortable)
- Simplify or detail form (production challenge identified in mock-up)
Refinement should be documented: show the change, record why it was made, and note how it addresses a specific finding from testing.
Evaluation against criteria
- Apply evaluation criteria to physical concepts systematically
- Record evidence: measurement results, user ratings, structural test outcomes
Comparative analysis
- If multiple physical concepts were developed, compare them criterion by criterion
- Select the concept that best addresses the brief, not simply the most visually appealing
End user critique
- Present physical concepts to end users; observe and record responses
- Ask structured questions (open and closed) about form, feel, function, and aesthetics
Designer self-critique
- Annotate models with observations: what works, what doesn’t, what requires development
- Be honest about weaknesses — identifying problems in the development phase is better than discovering them after production
Physical concept testing generates evidence that feeds back to:
- Evaluation criteria (a criterion may need revision if it proves unachievable)
- Material selection (a material that fails testing is replaced)
- Production plan (a process that is too time-consuming triggers plan revision)
KEY TAKEAWAY: Physicality cannot be fully assessed from drawings. Physical mock-ups, material trials, and ergonomic testing are essential for honest evaluation of design concepts.
EXAM TIP: Describe specific testing methods for physical concepts and link each to what it tests (e.g. ‘a cardboard mock-up tests ergonomics and proportion before committing to timber, saving time and material’).
