DT Knowledge Flashcards
HSE has seen a drop in work place injuries, why?
Health and safety training has increased and improved.
More safety precautions have been put in place.
Better safety equipment: goggles, gloves, emergency stop button, auto cutoffs, more automation of machines
What is the sign for safety googles?
A head in a blue circle wearing googles
If you do not obey the safety goggles sign, what could happen?
Become blind, burn face, infection, debris could get in your eyes
Trips and falls are most common accidents, how can signage and training reduce number of accidents
Signs alert you to danger, provide vital information about surroundings. Training helps by showing best methods of work and how to avoid accidents.
What does HSE stand for?
Health and Safety Executive
Which country does oak come from?
Uk and USA
What country is teak from?
SE Asia and India
What country does walnut come from?
SW Europe, east to Japan, SE Canada, west to California and south to Argentina
What country does pine come from?
North America, Europe, Russia, Canada and SE Asia
What country does red cedar come from?
United States
Uses of oak
Furniture, trimming, boat framing, wooden desks, flooring
Uses of teak
Ship and boat building, decking, rails, hatches, furniture, cabinet making, internal/external joinery, flooring, exterior structure. Also for acid resistance purposes, chemical vats, fume ducts and laboratory benches
Uses of walnut
Used in solid and veneer form for high class furniture and cabinet making. Bank and office fittings. Rifle butts and gun stocks. Turnery and carving, doors, sports goods and fascias
Uses of pine
Furniture, joinery and turnery - best grade. Vehicle bodies. Construction. Carcasing. Railway sleepers etc
Uses of red cedar
Outdoor furniture, beehives, building industry for roofs, exterior walls and panelling. Garages and sheds
Characteristics, properties and features of oak
A hard wood. Deciduous. Produce acorns. Live 200 years plus. Most take 100’s of years to reach maturity. Windsor oak tree over 800 years old. Can be destroyed by fire, carelessness by humans and used for wood. Beetles, fungi and bad weather also destroy them.
Straight grain
Golden brown, light tan to biscuit coloured
Characteristics, properties and features of teak
A hard and moisture-resistant wood. Resists warping and cracking and decay.
Tropical hardwood birches, can grow to height of 30-40m
Lives to 100 years. Can bend in high winds
Teak tree resin has oil in heartwood and highly water resistant, which can protect from decay, insects and bacteria
Brown to dark gold in colour
Strong, durable and attractive grain
Deciduous
Older trees are better quality wood. Trees must be drained (1-2 years)
Characteristics, properties and features of walnut
Hardwood. Fine texture, strong, attractive and easy to work with. Resists shrinking and warpping. Takes all finishes.
21 species, max height 60ft after 20 years. Grows 3ft a year. Blooms mid spring. Deciduous without colour change. Grows fruit - walnuts which are edible. Finest timbers available in Europe
Characteristics, properties and features of pine
Softwood, coniferous and can grow to 45m tall.
Needles grow 1-3 inches. Grows pine cones which has scales sheltering seeds.
Gymnosperm - meaning naked seed
It is knotty, strong, easy to work with.
Creamy white and pale yellow
Uniform texture. Finishes well. Resists shrinkage, swelling and warping.
Only species that reproduce from seeds.
Grown in any soil, anywhere
Grown in 6 out of 7 continents
Fully grown pine trees require full sun and little water
Oldest tree is the Great Basin Bristlecone pine 4840 years old
Characteristics, properties and features of red cedar
Softwood, coniferous. 30-40m, occasionally 60m
Spicy-resinous scented wood, thick ridged, or square cracked bark. Broad level branches. Leaves evergreen and needle like.
Eastern and western are the main types
Western 150ft, Eastern 50ft.
Light weight, knot free, weak, expensive, reddish brown
What are two purposes of the corrugated cardboard on the coffee cup?
Insulates hand between hand a hot coffee cup preventing burning.
Provides grip due to the ridges.
Why is corrugated card the most suitable?
Corrugated layer adds a bit more insulation between hand and cup. The fluted ridges creates a path for heat to escape. Create more grip due to the ridges creating more friction. It can reduce heat to null due to cupboard properties.
What is the symbol for the Forestry Stewardship Council?
A tick that turns into a tree. It has FSC below it with a copyright symbol in line with the top of the tree
Explain what the FSC symbol means
The harvested trees are replaced or allows them to grow naturally. Also protects the worlds forests.
What is the logo CE?
Conformité Européene it is found on toy labels
What is the lion logo for?
It is the lion mark and is the British consumer symbol for toys identifying safe and high quality toys
What is the Kite mark?
Top of a heart with the bottom of a kite and a kite string through the middle. It is for goods approved by British standards institution
Memphis was known for using…
Bold colours and eccentric patterns
Difference between tough and brittle metal
A brittle metal will shatter, a tough metal will be more durable
Why is stainless steel used in the manufacturing of cooking utensils?
Stainless steel does not rust or corrode, does not leave a metal taste in your mouth. It is easy to keep clean and is long lasting
Ferrous metals
Metals that are magnetic.
Cast iron and high carbon steel
Non-ferrous
Non-metallic
Silver, copper, aluminium
Alloys
An alloy is a mixture of ferrous and non-ferrous metals. A mix of 2 or more metals but can have some non-metallic elements.
Bronze, stainless steel
What is die cutting?
Die cutting is affordable when working in bulk. Used for a variety of shapes and many designs made to fit what you are doing. Cut a lot in a small amount of time
Safety points for using a hammer
Use protection hand or eye wear in case something shatters or you hit your hand
Advantages of softwood trees
Fast growing. They don’t have to wait as long to harvest the wood. Can be replanted. Pine trees are self seeding. Also cheaper to produce.
Advantages of having stock forms and sizes readily available
Customers can self serve, quicker for customers less time consuming for stores. More complicated lengths/forms can then be ordered.
3 characteristics of hardwood trees
Slow growing, deciduous, usually tougher than softwoods, more expensive
3 classifications of wood
Hardwood, softwood and manufactured
What is manufactured wood?
MDF (medium density fibreboard) or engineered wood is a wood-like composite made by heating, compressing, and binding sawdust, real wood chips and fibre together
Name some manufactured wood
Plywood - thin layers or sheets of wood veneer glued together
MDF
Chipboard
Name 2 methods to protect or slow down the process of rusting
Galvanising - applying a protective zinc cover
Covering with oil, grease or paint
Explain why the commercial use of casting is used in toy manufacturing.
Casting in toys is used to enable greater details. More toys can be quickly and easily produced. This saves time and money
Quality checks for a handwhisk
Lose or missing parts
All moving parts move
Stable and safe to use
Not easy to pull apart
A non-rusting metal such as stainless steel would be good to use
How can risks assessments lower the risk of accidents?
Risk assessments are a checklist that can be used to identify any risk.
Helps reduce or prevent risk by acknowledging different areas of risk and coming up with ways to lower risk
Circumference of a circle formula
2 x pi x r
Diameter of circle formula
D = 2r
What is meant by the term quality assurance?
Quality assurance is a process to prevent quality failures and to ensure that the quality of products is as expected
What is CAD? Advantages/disadvantages
Computer Aided Design
Ads:
Quicker to draw and develop
Designs can be viewed by all angles
Consumer feedback can be gained before completion
Disadvantages:
Might not be quite what you want. Expensive to set up
Computers can fail
Need to be skilled
Ergonomics
The study of people in their working environment.
Relating to or designed for efficiency and comfort
What annotations would you put on a drawing design
Use
Measurements
Parts required
Weight
Colour
Characteristics of Arts and Craft movement
Simple design
Natural colours
Coshh
Control of Substance Hazardous to Health
Two fibre types
Staple and Filand
