These notes cover the essential materials and manufacturing processes you'll... Show more
Product Design2,118 views·Updated May 13, 2026·16 pagesComprehensive AQA A-Level Product Design Study Notes
leah :)@sharkido
1 / 10
1
of 10
Wood Types and Properties
Hardwoods come from deciduous trees (like oak and mahogany) that take around 80 years to grow, making them expensive but attractive with strong grain patterns. Softwoods grow from coniferous trees in just 25 years, making them cheaper and perfect for construction work.
The key material properties you need to know include compressive strength (resisting crushing), tensile strength (resisting stretching), and toughness (absorbing impact without breaking). These properties determine what each wood type is best suited for.
Seasoning removes moisture from timber - either through traditional air seasoning (slow but cheap) or kiln seasoning (fast but expensive). This prevents warping and cracking in your finished products.
Top Tip: Remember that hardwoods aren't always harder than softwoods - the names refer to the tree type, not actual hardness!
2
of 10
Manufactured Boards and Stock Forms
Manufactured boards solve many problems with natural wood - no knots, large sheet sizes, and consistent quality. Plywood uses thin layers glued at 90° for strength in all directions, whilst MDF compresses wood fibres for smooth surfaces perfect for painting.
The main disadvantages include hazardous adhesives and difficulty with traditional joints. Marine plywood and Aeroply are specialist versions designed for specific applications like boat building and curved furniture.
Stock forms determine how much finishing work you'll need to do. Rough sawn timber comes straight from seasoning, PSE (planed square edge) has one clean edge, and PAR (planed all round) is ready to use but about 3mm smaller than the nominal size.
Quick Check: Always account for the 3mm reduction when calculating material requirements for PAR timber!
3
of 10
Metals and Alloys
Pure metals like aluminium and copper have specific properties that make them ideal for certain jobs. Aluminium's lightweight and corrosion resistance makes it perfect for aircraft, whilst copper's electrical conductivity is essential for wiring.
Steel varieties depend on carbon content - low carbon steel (0.15-0.30%) is ductile and malleable for car bodies, whilst medium carbon steel (0.30-0.70%) is harder for springs and tools. Stainless steel adds chromium and nickel for corrosion resistance.
Alloys combine metals to get better properties than pure metals alone. Bronze mixes copper and tin for toughness, brass combines copper and zinc for casting, and Duralumin gives steel-like strength at aluminium's weight.
Memory Aid: Remember that ferrous metals contain iron and will rust, whilst non-ferrous metals don't contain iron and are usually corrosion resistant.
4
of 10
Polymers: Thermoplastics and Thermosets
Thermoplastics can be reheated and reshaped multiple times, making them recyclable. LDPE and HDPE are tough polyethylenes used for bottles and bags, whilst ABS provides the hardness needed for computer housings and phone cases.
Each plastic has a safe working temperature - exceed this and the material will deform. Nylon works up to 150°C, making it suitable for car engine parts, whilst polypropylene only manages 100°C but has excellent fatigue resistance for hinged lids.
Thermosets like urea formaldehyde and melamine formaldehyde can't be reheated once set - they're permanently cross-linked. This makes them ideal for electrical fittings and heat-resistant applications, but they can't be recycled.
Exam Focus: Learn the safe working temperatures - they're frequently tested and crucial for material selection in design scenarios.
5
of 10
Elastomers and Biopolymers
Elastomers are stretchy materials that return to their original shape. Natural rubber provides high tensile strength for tyres, whilst neoprene offers chemical resistance for wetsuits. Silicone handles temperature extremes brilliantly, making it perfect for bakeware.
Biopolymers are the future of sustainable design. PLA comes from corn starch and works well for 3D printing, whilst corn starch polymer creates biodegradable packaging that breaks down naturally.
Different biopolymers degrade in different ways - oxy-degradable breaks down with oxygen exposure, photodegradable needs UV light, and hydro-degradable dissolves in water. This lets designers choose the right degradation method for each application.
Sustainability Note: Biopolymers often need specific conditions to break down properly - they won't just disappear in any environment.
6
of 10
Composites and Smart Materials
Composites combine different materials for superior properties. CFRP (carbon fibre reinforced plastic) is incredibly strong yet lightweight for racing cars and bikes. GRP uses glass fibres and is cheaper, making it perfect for boat hulls.
Concrete is a composite you might not expect - cement, sand, and aggregate create excellent compression strength, whilst adding steel reinforcement handles tension forces for buildings and bridges.
Smart materials respond to environmental changes. Shape memory alloys like nitinol change shape with temperature for dental braces, whilst thermochromic pigments change colour for mood mugs and baby spoons.
Design Application: Smart materials add functionality without complex electronics - perfect for innovative product solutions.
7
of 10
Modern Materials and Paper Processes
Modern materials continue evolving with technology. Kevlar provides cut and heat resistance for body armour, whilst precious metal clay lets you mould metal like ceramic clay for jewellery making.
Polymorph becomes moldable at just 60°C, making it brilliant for prototyping ergonomic handles - just heat it with a hair dryer and reshape as needed.
Paper and board processes include die cutting for creating nets, embossing for raised effects, and foil blocking for metallic finishes. Screen printing offers minimal setup costs, flexographic printing handles long runs cheaply, and offset lithographic printing delivers high-quality results.
Prototype Tip: Polymorph is perfect for testing handle shapes and mechanical parts before committing to expensive tooling.
8
of 10
Polymer Manufacturing Processes
Vacuum forming works great for small batches and thin sheets - the heated polymer gets sucked onto your mould by vacuum pressure. It's limited to simple shapes but perfect for packaging and prototypes.
Injection moulding handles mass production brilliantly despite high setup costs. Melted plastic gets forced into precision moulds under hydraulic pressure, creating identical parts every time - think bottle caps and phone cases.
Blow moulding creates hollow products like bottles by inflating a tube of melted plastic inside a mould. Rotational moulding makes seamless, heavy-duty items like traffic cones by rotating heated powder inside a mould.
Production Planning: Choose your process based on quantity - vacuum forming for prototypes, injection moulding for thousands of identical parts.
9
of 10
Advanced Manufacturing Processes
Line bending creates precise bends in acrylic sheets using focused heat - essential for display cases and architectural features. Calendaring produces thin plastic films by squashing material between heated rollers.
Lay-up processes create GRP products by building up layers of glass fibre matting with resin. Each layer adds strength, and the gel coat provides a smooth finish - perfect for boat hulls and car body panels.
Extrusion forces softened plastic through shaped dies to create continuous profiles like window frames and pipes. The Archimedean screw feeds material consistently through the heated chamber.
Quality Control: Each process has specific temperature and pressure requirements - getting these right ensures strong, defect-free products.
10
of 10
Metal Forming Processes
Press forming shapes sheet metal by forcing it into dies under hydraulic pressure - think car body panels and kitchen sinks. Spinning rotates metal blanks against a mandrel while a roller tool gradually forms the shape.
Drop forging heats metal above its recrystallisation temperature before hammering it into dies. This prevents brittleness and creates incredibly strong components like crankshafts and connecting rods.
Deep drawing creates cup-like shapes by pulling sheet metal through progressively smaller dies. Rolling reduces thickness by passing hot metal through sets of rollers - hot rolling avoids stresses but creates surface deposits that need removing.
Temperature Matters: Working metal above its recrystallisation temperature prevents cracking and creates stronger, stress-free components.
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Product Design2,118 views·Updated May 13, 2026·16 pagesComprehensive AQA A-Level Product Design Study Notes
leah :)@sharkido
These notes cover the essential materials and manufacturing processes you'll encounter in A-Level Product Design. Understanding material properties and how they're processed is crucial for design decisions and your exams.
1
of 10Sign up to see the content. It's free!
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- Improve your grades
- Join milions of students
Wood Types and Properties
Hardwoods come from deciduous trees (like oak and mahogany) that take around 80 years to grow, making them expensive but attractive with strong grain patterns. Softwoods grow from coniferous trees in just 25 years, making them cheaper and perfect for construction work.
The key material properties you need to know include compressive strength (resisting crushing), tensile strength (resisting stretching), and toughness (absorbing impact without breaking). These properties determine what each wood type is best suited for.
Seasoning removes moisture from timber - either through traditional air seasoning (slow but cheap) or kiln seasoning (fast but expensive). This prevents warping and cracking in your finished products.
Top Tip: Remember that hardwoods aren't always harder than softwoods - the names refer to the tree type, not actual hardness!
2
of 10Sign up to see the content. It's free!
- Access to all documents
- Improve your grades
- Join milions of students
Manufactured Boards and Stock Forms
Manufactured boards solve many problems with natural wood - no knots, large sheet sizes, and consistent quality. Plywood uses thin layers glued at 90° for strength in all directions, whilst MDF compresses wood fibres for smooth surfaces perfect for painting.
The main disadvantages include hazardous adhesives and difficulty with traditional joints. Marine plywood and Aeroply are specialist versions designed for specific applications like boat building and curved furniture.
Stock forms determine how much finishing work you'll need to do. Rough sawn timber comes straight from seasoning, PSE (planed square edge) has one clean edge, and PAR (planed all round) is ready to use but about 3mm smaller than the nominal size.
Quick Check: Always account for the 3mm reduction when calculating material requirements for PAR timber!
3
of 10Sign up to see the content. It's free!
- Access to all documents
- Improve your grades
- Join milions of students
Metals and Alloys
Pure metals like aluminium and copper have specific properties that make them ideal for certain jobs. Aluminium's lightweight and corrosion resistance makes it perfect for aircraft, whilst copper's electrical conductivity is essential for wiring.
Steel varieties depend on carbon content - low carbon steel (0.15-0.30%) is ductile and malleable for car bodies, whilst medium carbon steel (0.30-0.70%) is harder for springs and tools. Stainless steel adds chromium and nickel for corrosion resistance.
Alloys combine metals to get better properties than pure metals alone. Bronze mixes copper and tin for toughness, brass combines copper and zinc for casting, and Duralumin gives steel-like strength at aluminium's weight.
Memory Aid: Remember that ferrous metals contain iron and will rust, whilst non-ferrous metals don't contain iron and are usually corrosion resistant.
4
of 10Sign up to see the content. It's free!
- Access to all documents
- Improve your grades
- Join milions of students
Polymers: Thermoplastics and Thermosets
Thermoplastics can be reheated and reshaped multiple times, making them recyclable. LDPE and HDPE are tough polyethylenes used for bottles and bags, whilst ABS provides the hardness needed for computer housings and phone cases.
Each plastic has a safe working temperature - exceed this and the material will deform. Nylon works up to 150°C, making it suitable for car engine parts, whilst polypropylene only manages 100°C but has excellent fatigue resistance for hinged lids.
Thermosets like urea formaldehyde and melamine formaldehyde can't be reheated once set - they're permanently cross-linked. This makes them ideal for electrical fittings and heat-resistant applications, but they can't be recycled.
Exam Focus: Learn the safe working temperatures - they're frequently tested and crucial for material selection in design scenarios.
5
of 10Sign up to see the content. It's free!
- Access to all documents
- Improve your grades
- Join milions of students
Elastomers and Biopolymers
Elastomers are stretchy materials that return to their original shape. Natural rubber provides high tensile strength for tyres, whilst neoprene offers chemical resistance for wetsuits. Silicone handles temperature extremes brilliantly, making it perfect for bakeware.
Biopolymers are the future of sustainable design. PLA comes from corn starch and works well for 3D printing, whilst corn starch polymer creates biodegradable packaging that breaks down naturally.
Different biopolymers degrade in different ways - oxy-degradable breaks down with oxygen exposure, photodegradable needs UV light, and hydro-degradable dissolves in water. This lets designers choose the right degradation method for each application.
Sustainability Note: Biopolymers often need specific conditions to break down properly - they won't just disappear in any environment.
6
of 10Sign up to see the content. It's free!
- Access to all documents
- Improve your grades
- Join milions of students
Composites and Smart Materials
Composites combine different materials for superior properties. CFRP (carbon fibre reinforced plastic) is incredibly strong yet lightweight for racing cars and bikes. GRP uses glass fibres and is cheaper, making it perfect for boat hulls.
Concrete is a composite you might not expect - cement, sand, and aggregate create excellent compression strength, whilst adding steel reinforcement handles tension forces for buildings and bridges.
Smart materials respond to environmental changes. Shape memory alloys like nitinol change shape with temperature for dental braces, whilst thermochromic pigments change colour for mood mugs and baby spoons.
Design Application: Smart materials add functionality without complex electronics - perfect for innovative product solutions.
7
of 10Sign up to see the content. It's free!
- Access to all documents
- Improve your grades
- Join milions of students
Modern Materials and Paper Processes
Modern materials continue evolving with technology. Kevlar provides cut and heat resistance for body armour, whilst precious metal clay lets you mould metal like ceramic clay for jewellery making.
Polymorph becomes moldable at just 60°C, making it brilliant for prototyping ergonomic handles - just heat it with a hair dryer and reshape as needed.
Paper and board processes include die cutting for creating nets, embossing for raised effects, and foil blocking for metallic finishes. Screen printing offers minimal setup costs, flexographic printing handles long runs cheaply, and offset lithographic printing delivers high-quality results.
Prototype Tip: Polymorph is perfect for testing handle shapes and mechanical parts before committing to expensive tooling.
8
of 10Sign up to see the content. It's free!
- Access to all documents
- Improve your grades
- Join milions of students
Polymer Manufacturing Processes
Vacuum forming works great for small batches and thin sheets - the heated polymer gets sucked onto your mould by vacuum pressure. It's limited to simple shapes but perfect for packaging and prototypes.
Injection moulding handles mass production brilliantly despite high setup costs. Melted plastic gets forced into precision moulds under hydraulic pressure, creating identical parts every time - think bottle caps and phone cases.
Blow moulding creates hollow products like bottles by inflating a tube of melted plastic inside a mould. Rotational moulding makes seamless, heavy-duty items like traffic cones by rotating heated powder inside a mould.
Production Planning: Choose your process based on quantity - vacuum forming for prototypes, injection moulding for thousands of identical parts.
9
of 10Sign up to see the content. It's free!
- Access to all documents
- Improve your grades
- Join milions of students
Advanced Manufacturing Processes
Line bending creates precise bends in acrylic sheets using focused heat - essential for display cases and architectural features. Calendaring produces thin plastic films by squashing material between heated rollers.
Lay-up processes create GRP products by building up layers of glass fibre matting with resin. Each layer adds strength, and the gel coat provides a smooth finish - perfect for boat hulls and car body panels.
Extrusion forces softened plastic through shaped dies to create continuous profiles like window frames and pipes. The Archimedean screw feeds material consistently through the heated chamber.
Quality Control: Each process has specific temperature and pressure requirements - getting these right ensures strong, defect-free products.
10
of 10Sign up to see the content. It's free!
- Access to all documents
- Improve your grades
- Join milions of students
Metal Forming Processes
Press forming shapes sheet metal by forcing it into dies under hydraulic pressure - think car body panels and kitchen sinks. Spinning rotates metal blanks against a mandrel while a roller tool gradually forms the shape.
Drop forging heats metal above its recrystallisation temperature before hammering it into dies. This prevents brittleness and creates incredibly strong components like crankshafts and connecting rods.
Deep drawing creates cup-like shapes by pulling sheet metal through progressively smaller dies. Rolling reduces thickness by passing hot metal through sets of rollers - hot rolling avoids stresses but creates surface deposits that need removing.
Temperature Matters: Working metal above its recrystallisation temperature prevents cracking and creates stronger, stress-free components.
We thought you’d never ask...
What is the Knowunity AI companion?
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
Where can I download the Knowunity app?
You can download the app from Google Play Store and Apple App Store.
Is Knowunity really free of charge?
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
Most popular content: Processes
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This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
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