Starter quiz
- What can a designer evaluate their design against?
- someone else's design ideas
- a design specification ✓
- an existing product
-
- What does the word 'justify' mean?
- to give a reason or explanation for the decisions ✓
- to list different options without explanation
- to guess the outcome without evidence
-
- The balanced relationship between different parts of a product is called?
- 'proportion' ✓
What information can be seen around the outside of this sketch?- alterations
- dimensions ✓
- permissions
-
- ______ is used in design and prototyping to represent objects at a different size than their actual dimensions.
- 'scale' ✓
- Put these ratios in size order from biggest to smallest.
- 1⇔2:1
- 2⇔1:1
- 3⇔1:2
- 4⇔1:25
- 5⇔1:50
Exit quiz
- The ways in which a material responds to an external force or a certain environment are referred to as ______
- 'working properties.' ✓
- Which stock forms are polymers available in?
- rods ✓
- tubes ✓
- planks
- granules ✓
- sheets ✓
-
- ______ is very stable in all directions due to alternate direction layering.
- 'plywood' ✓
- Which of these health and safety concerns must you consider when cutting MDF with a coping saw?
- dust ✓
- heat
- loud noise
- poor lighting
-
Worksheet
Presentation
Video
Lesson Details
Key learning points
- When selecting suitable materials for manufacturing, decisions need to be explained and justified.
- A manufacturing specification is written to inform manufacture.
Common misconception
Choosing materials is always based on aesthetics.
Many factors determine the material choice, such as the purpose and environment of the product. For example, MDF is absorbent and not suitable for damp or humid places, unless finished with a waterproof layer.
Keywords
Justification - the reason or explanation for why something is done, or believed to be right
Manufacturing specification - a detailed document that outlines requirements to produce a product
Working property - the way in which a material responds to an external force or certain environment; also referred to as mechanical properties
Physical property - the characteristics of a material, such as appearance and features
Manufacture - the process of making products from raw materials using machines or labour