KS3 DT Flashcards
(65 cards)
Design
Identify and understand user needs
Solving design problems
Generate, Develop & Communicate design ideas
Make
Use (and select) specialist processes & equipment precisely
Make use of computer-aided manufacture
Food: Competent in a range of cooking techniques
Evaluate
Test, evaluate and refine ideas and products
Analyse the work of past and present designers
Consider the views of users and others
Food: Awareness of taste, texture and smell of ingredients
Technical knowledge
The properties of materials
performance of structures & mechanical systems
Electrical and electronic systems
Food: Principles of Nutrition and Health
Food: Sources, seasonality and characteristics of ingredients
Properties of common materials
Material: Mild Steel
Properties: Tough, ductile, malleable, good tensile strength, rusts easily
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Material: Stainless Steel
Properties: Hard, corrosion-resistant, durable, shiny, expensive
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Material: Aluminium
Properties: Lightweight, corrosion-resistant, good strength-to-weight ratio, ductile
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Material: Copper
Properties: Excellent electrical and thermal conductor, ductile, corrosion-resistant, soft
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Material: Brass
Properties: Corrosion-resistant, good conductor, harder than copper, gold-like appearance
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Material: Oak (hardwood)
Properties: Strong, tough, durable, attractive grain, expensive
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Material: Pine (softwood)
Properties: Lightweight, easy to work with, grows quickly, can warp
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Material: MDF (Medium Density Fibreboard)
Properties: Smooth surface, uniform strength, easy to machine, absorbs moisture if untreated
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Material: Acrylic (PMMA)
Properties: Hard, brittle, good optical clarity, scratches easily
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Material: Polyethylene (PE)
Properties: Tough, flexible, chemical-resistant, used in plastic bags/bottles
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Material: Polyvinyl Chloride (PVC)
Properties: Stiff or flexible (depending on type), good chemical/weather resistance, cheap
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Material: Cardboard
Properties: Lightweight, recyclable, can bend and fold, not very strong when wet
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Material: Corrugated Cardboard
Properties: Stronger than regular cardboard, good for packaging, lightweight
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Material: Nylon
Properties: Hard, tough, good wear resistance, low friction, used in gears or textiles
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Material: Polyester
Properties: Strong, durable, resistant to shrinking and stretching, quick-drying
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Material: Glass
Properties: Hard, brittle, transparent, good insulator, recyclable
Safe working practices
Listen to instructions carefully
Move around the workshop sensibly
Stay clear of people using machinery
Keep the workshop tidy
Follow H&S Guidance for each machine
Wear aprons and goggles
Prototypes are models made to test if a design is
successful and limitations needing to be improved
3 parts of risk assessment
Hazard (identify danger)
Risk (How severe? low/medium/high)
Control Measure (How can it be made
safer?)
Machine Control Measure
Wear goggles to
protect eyes
from dust
debris
Sand on the
machine bed to
prevent material
catching
Use guards to
cover
dangerous
areas
Wear aprons to
protect clothes
tangling in
Pillar Drill
Clamp work tightly in machine vice with jig.
Line the holes in jig up with tip of drill by lowering the
drill slowly towards it.
Use depth stop to ensure hole depths are same depth.
Scroll Saw
Use two hands on your work, press firmly downwards
and gently forwards. Do not force or rush.
Turn work gradually with both hands to follow the lines
of your cut. Cut on the waste side of the line.
Sanding Machines
Support the work on the machine bed. Press gently
towards the sanding surface, moving the workpiece side
to side continuously.
Modelling & Testing
Tensile Strength is a material’s resistance to the
tension cause by a pulling force
Compressive Strength is a material’s resistance to a
crushing or squeezing force.
Triangles are a strong shape because they distribute
the tension and compression forces evenly through
the structure.
Food Safety
Tidy, water, wipe, clean, dry, check
100* - Boiling water, bacteria will be destroyed
75* - Cooking/reheating
63* - Minimum hot holding
37* - Body temperature, ideal temperature for bacteria to grow
8* - Food storage, store food at this temperature or below
5* - Fridge temperature
-18* - Freezer temperature, bacteria won’t grow but I may not die
Glue Gun Use:
Squeezing a small amount of glue
helps it too cool down and set quicker
Return the glue gun to its stand immediately after use
Burns should be treated by running them under cold
water for 20 mins
When we tested the bridges we worked out the
strength to weight ratio.
Bridge weight
——————-
Load carried
Testing a design until it breaks is called destructive
testing - good with a scale model, but not a real
bridge because of time and money constraints
Opinion - What do you see / observe?
Because - Why do you think it is/happened like that?
So What - What does it mean for that design / your
project?
Knife Skills
Bridge- Use the knife to slice the
ingredient in the bridge-like grip
created by your forefingers and
thumb
Claw - With your thumb tucked
under, holder the ingredient to be
cut in a claw-like grip
USER CENTRED
DESIGN
A design strategy that considers the
needs and wants of the user at
each stage of the design process
Aesthetics! - how well a product
appeals to the fives senses
Function - what a product does
and how it works
Client - The person responsible for
defining the design brief.
User - The person(s) involved in
using the product
Opinion
What do you see / observe?
Because
Why do you think it
is/happened like that?
So what?
What does it mean for that
design / your project?
Insights
Useful / important
information for the designer to
consider
Client/user profile
a summary of
the client/user’s likes & interests
Product analysis
not just describing
a product, it is about understanding
why it has been designed that way
User - Task - Environment
Design brief
a summary of the
design opportunity
