SQA Higher Design and Manufacture Materials and Manufacture area overview quiz quiz

Natural timbers, sawn directly from trees

Manufactured boards, bonded from fibres

Ferrous metals, containing iron

Thermoplastics, softened by heat

It is far stronger on screwed edges than any solid timber

It comes in large, flat, stable sheets with no grain, so it does not cup or warp

It is much lighter than every natural timber

It is always cheaper to recycle than solid wood

It is always an alloy of copper and zinc

It is light and never corrodes

It contains iron and usually rusts unless protected

It is a polymer that softens when heated

It is much cheaper per kilogram than mild steel

It is the strongest metal available

It is much harder to corrode-protect than steel

It is light (low density) and resists corrosion without painting

Thermoplastics soften on heating and can be reshaped; thermosets set permanently and cannot be remelted

Thermoplastics are always stronger than thermosets in every product

Thermosets can be recycled easily but thermoplastics cannot

Thermoplastics are natural materials and thermosets are synthetic

It can be remelted and recycled many times

It does not soften when heated and is a good rigid insulator

It is the cheapest plastic to injection-mould

It is flexible so it bends around the wires

A heated sheet is pulled over a mould by removing the air beneath it

A tube of molten plastic is inflated inside a mould to make a hollow shape

Molten thermoplastic is injected under pressure into a closed steel mould, cooled and ejected

Molten metal is poured into a sand mould and left to solidify

The steel mould is cheap, so it suits a single product

It can only ever make one part before the mould wears out

It needs no tooling at all, so volume does not matter

Once the expensive mould is made, each fast cycle gives a low cost per item over a large run

It makes complex enclosed shapes from thermosetting plastics

It requires an expensive steel mould like injection moulding

It can only be used for metal products

It forms thin, shallow shapes and uses cheap wood or resin moulds

Forging

Blow moulding

Sand casting

Turning

One-off (job) production

Continuous production

Batch production

Mass production

The allowed range a dimension may vary within and still be acceptable

The total number of products made in a batch

The cost of the tooling needed for a process

A device that guides a tool for repeatable accuracy

It makes every product completely unique and hand-finished

It removes the need for any quality control

It uses interchangeable standard parts so components fit and can be replaced, speeding assembly

It slows assembly so each part can be checked individually

To protect the material and to improve its appearance

To make it heavier and more expensive

To remove the need for any joining method

To turn a thermoplastic into a thermoset

They form a permanent welded joint that cannot be undone

They let the furniture pack flat and be assembled, and dismantled, by the customer with simple tools

They are only used to finish the surface of the wood

They make the furniture impossible to take apart once built

Reduce, Reuse, Recycle, Repair, Refuse, Rethink

Reduce, Reheat, Recycle, Resell, Refuse, Repaint

Reuse, Replace, Remould, Recolour, Repair, Reject

Recycle, Reinforce, Reduce, Restore, Reorder, Rethink

Designing a product to last as long as possible and be easy to repair

Designing a product to wear out or date so the customer buys a replacement

Using only recyclable materials in a product

Making every part interchangeable with standard fittings