What can you learn by taking apart and studying existing products before designing your own?
Carry out a product analysis of an existing product, examining its function, materials, construction and user experience to inform your design
A focused answer to the N(A)-Level D&T outcome on product analysis. How to study an existing product across function, materials, construction, ergonomics, cost and appearance, and use the lessons to improve your own design.
Reviewed by: AI editorial process; not yet individually human-reviewed
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What this dot point is asking
SEAB wants you to study an existing product in detail, examining how it works, what it is made of, how it is built, and what it is like to use, and then use those lessons to make your own design better. Product analysis is a quick way to learn from designers who have already solved a similar problem.
The answer
Why analyse an existing product
A similar product already exists for most problems. Taking it apart, in your mind or in reality, shows you what works, what fails, and how it is made. The aim is not to copy but to learn, so you can keep the good ideas and fix the weak ones for your own users.
What to examine
A thorough product analysis looks across several headings. A useful checklist is:
- Function. What does it do, and how well? Which features matter most?
- Materials. What is each part made from, and why? Which property does each material provide?
- Construction. How are the parts joined and made? Is it strong where it needs to be?
- Ergonomics and user experience. Is it comfortable, safe and easy to use? Where does a user struggle?
- Cost and value. Does it seem worth the price? Where is money spent or saved?
- Appearance. Does it look right for its user and setting?
Turning analysis into lessons
For each heading, write a lesson for your own design. A finding that "the lamp tips when the head extends" becomes "my lamp needs a heavier or wider base". A finding that "the soft grip is comfortable" becomes "keep a soft grip in my design". The lessons feed your specification and ideas.
Disassembly
Where it is safe, taking a product apart shows how it is built: the joints, the fixings and the order of assembly. This teaches you practical making methods you can use yourself. Always follow safe practice and put the product back if it is not yours to keep.
Examples in context
Example 1. A travel mug. Analysis finds a good leak-proof lid (keep it), a slippery body (add a grip), and a base too wide for a car holder (make it narrower). Each finding becomes a clear point for the new design's specification.
Example 2. Construction teaches making. A student takes apart a simple wooden box and sees the corners use finger joints for strength. They had planned weak butt joints; the analysis teaches them a stronger method to use in their own project.
Try this
Q1. Name four headings you could use to analyse a product. [4 marks]
- Cue. Any four of function, materials, construction, ergonomics, cost, appearance.
Q2. A toy's analysis shows small parts that could come off. State the design lesson. [1 mark]
- Cue. Avoid small detachable parts so the toy is safe, especially for young children.
Q3. Explain how product analysis is different from copying. [3 marks]
- Cue. Analysis learns from strengths and weaknesses to improve the design for your own users, while copying just reproduces the same product without solving its problems.
Exam-style practice questions
Practice questions written in the style of SEAB exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.
Original6 marksA student wants to design a desk lamp and decides to analyse an existing desk lamp first. Describe three different things the student should examine, and for each explain what could be learned to help the new design.Show worked answer →
Function: how well the lamp lights the desk and whether the head adjusts. This shows what features the new lamp needs to keep or improve.
Materials and construction: what the base, arm and shade are made from and how the parts join. This shows which materials give stability and how to make the lamp strong and stable.
Ergonomics and user experience: how easy the switch is to reach and whether the lamp tips over. This reveals problems to avoid and good points to copy in the new design.
What markers reward: three clearly different aspects (such as function, materials and construction, ergonomics, cost, appearance), each linked to a lesson for the new design. Listing parts without saying what is learned scores less.
Original4 marksExplain why studying an existing product can help you design a better one, rather than just copying it.Show worked answer →
Studying an existing product shows you what already works well, which you can keep, and what its weaknesses are, which you can improve. You learn how it is made and what materials suit the job. This is different from copying, because you use the lessons to solve the weaknesses and meet your own users' needs, not to reproduce the same product.
What markers reward: the idea that analysis reveals both strengths to keep and weaknesses to improve, and that the goal is to learn and improve for your own users rather than to copy.
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