DT Revision
Metals
Stainless Steel
Brass
Tough
Resists wear
Corrosion resistant
Corrosion resistant
Good conductor
Polishes well
65% copper, 35% Zinc
Acrylic
Properties
Easily cleaned
Food safe
Easily finished
Tough
Easily scratched
Common uses
Shop signs
Rear car lights
Baths
Fish tanks
Menu holders
Advantages
Disadvantages
Widely available
Can be shaped using heat
Does not need painting
Breaks easily if dropped
Green designs
Carbon footprint
How to reduce
Using renewable energy
Maximising energy efficiency
Analysing their supply chain
Recycling
Identifying carbon offset methods
Considerations
Reducing waste or using less materials
Designing for energy efficiency in the use of the product
Using biodegradable materials
Using more non-toxic recyclable materials or reusable components
Using renewable energy sources or more efficient energy sources
Timbers
Sustainability
Forest Stewardship Council
Deforestation
Habitat destruction and loss
Processing
Transportation
Wastage
Pollution
If timber from sustainable sources is used, it does less damage to the environment.
Social footprint
Impact of logging on communities - can be good and bad
Recycling and diposal
Trend forecasting
Genetic engineering
Make tree grow faster
We do not know enough about the long-term effects of release genetically engineered plants into the environment.
Make tree resistant to diseases
Change DNA of a tree
Manufacturing Processes
Routing
Sawing
Mortiser
Rotating cutter
Makes a square hole for mortise and tenon joint
Circular saw
Bandsaw
Bag press
A mould and laminates are put inside
The air is then sucked out of it
The laminates are forced into the mould and held while the glue dries