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Arts and Humanities
Product design questions for 29th June 2021
questions for exam on 29th june
Terms in this set (58)
Why are industrial tests more accurate than workshop tests when testing material properties. Give example in your answer. (2 marks)
- more reliable BECAUSE they can be computer controlled SO same pressure (force) can be applied each time
- results are compared against a set scale or standardised test piece/sample
- machines are regularly calibrated to ensure accurate comparable results each time
- e.g. Rockwell testing is used to test for hardness of the material
Describe how a specific industrial test is undertaken to measure the material hardness (4 marks)
- Brinell test: hardened standard size steel ball is forces into surface using pre-set load - the diameter of indent in the surface is measured so the smaller the diameter, the harder the material
Explain why the knock down fittings named above are appropriate for each of the specific applications (3 x 2 marks) BARREL NUT AND BOLT
- provides a secure joint, it has a metal thread & large head helping to spread load of joint, it is easy to tighten the bolt with Allen key if cot needs storing or adjusting
Explain why the knock down fittings named above are appropriate for each of the specific applications (3 x 2 marks) CAM LOCK
- it is hidden from outside and top surface improving aesthetics and it is easily accessible as the bolt head exposed outside of frame can be undone with Allen key if cot needs storing or adjusting
Explain why the knock down fittings named above are appropriate for each of the specific applications (3 x 2 marks) DOWEL
- dowel help locate shelf during assembly and glue can be used to provide additional strength, no visible fixings so its hidden making it more attractive, the joint will only be subjected to small amount of force making it suitable
Name: Corner block or fixit
- application: cabinet
- reasons: it can be dismantled easily using screwdriver if it needs to go in a different location, the screws countersink inside the block & are easy to locate, the joint remains rigid if nylon moulded blocks are used
Name a specific application for each of the following compliant materials:
*bleed proof paper
*moulded paper pulp
Bleed proof paper - drawing, sketching and rendering with marker pens
Duplex card - food card-based packaging that may hold liquids or food contact (waxy glossy coating - disposable cups/plates)
Moulded paper pulp - egg boxes, takeaway cup carriers
Material Name: Neoprene, Butadiene, Silicon
Type/classification of material?
Material Name: Neoprene, Butadiene, Silicon
Type/classification of material: Elastomer
Description: A synthetic polymer with elastic properties
Applications: laptop cases, wetsuits, door seals, hose covers, wire insulation
Properties: Good thermal resistance, toughness, electrical insulator, weather and chemical resistance, toughness, good abrasion resistance.
Example questions: Explain why neoprene is a suitable material to manufacture a case to carry a laptop. [8 marks]
Neoprene is an elastomer and will stretch around the laptop holding it securely.
Neoprene is soft so will not scratch the screen or casing of the laptop.
It is thin and lightweight so does not add unnecessary bulk when being used.
It is available in a wide range of colours. The neoprene can be printed on and logos or branding applied.
Fixings such as zips and poppers can be stitched into the fabric.
Neoprene is water repellent, protecting the product from small spillages.
Laptops are often carried and are fragile devices that require a protective sleeve to prevent damage. Neoprene will help prevent damage from impact if dropped.
Give three reasons why a kitchen work surface may have a melamine formaldehyde layer applied
1.It has insulation property which is resistant to heat so it is not affected by hot pans or dishes.
2.It is a hard material resistant to scratches and wear in case of cutting foods on it therefore making it durable.
3.It is chemical resistant which does not react to chemicals from food or other detergents
A manufacturer is producing plastic (GRP) moulding. Calculate the volume of hardener needed.
*Size of GRP mat needed for moulding - 2 metres x 5 metres
*Ration of resin to hardener - 3: 2
*Total volume of liquid (resin and hardener) needed
5 x 2 = 10 m^2, 3 x 10 m^3, 3 + 2 = 5, 30/5 = 6 m^3, 6 x 2 = 12 m^3, therefore, the volume of the hardener is 12 m^3
Explain how the use of Just In Time manufacture improve efficiency within production (6 marks)
Explain the importance of the efficient supply of materials and components in a Just in Time (Jit) manufacturing process. (9 marks)
Jit manufacture allows for flexibility on the production line so customers' orders must arrive on time and consistently in order to prevent down time.
Components are not stockpiled so scheduled deliveries must be on time to minimise disruption to manufacture.
Suppliers can be selected by proximity to the assembly plant to reduce travel time and disruption.
Machinery and layout in the factory should be planned and adjusted to allow for efficient delivery of components.
Limited storage is available so stockpiles must be topped up and maintained. Stock is managed by computer systems.
RFID identification is used to track products through the factory and automatically select the correct parts to install and order stock when necessary.
Delay in deliveries will affect the productivity of manufacture.
Explain why foam board is suitable material for the manufacture of an architectural model (4 marks)
Foam board, when cut, provides a clean, straight edge.
It offers a lightweight, strong and rigid surface for presentation statistics, charts and graphs.
Because it is pH neutral and acid-free, it offers a suitable surface for the adhesion of photographs.
Foam board is UV-treated, so it resists yellowing with age.
It is lightweight and easy to cut and shape using hand tools and light equipment such as fretsaws.
It is ideal for model making, although foam board can be relatively expensive.
Card clad foam board is - foam with thick card applied to either surface.
Describe the process of forming a timber product using lamination. (6 marks)
Thin slices of natural timber (wood veneers) or thin manufactured boards such as 3mm plywood are glued together and bent over the former.
When dry, they form a thicker board in the shape of the former
While drying, the laminates may hold in place with clamps or using a vacuum bag
With vacuum bagging, the former and veneers are placed under a polythene sheet which the sheet edges are taped down to the table
A valve is fitted on the polymer sheet and a vacuum pump sucks out air, and the resulting pressure pulls the laminates hard together.
This ensures that there are no gaps in the laminating.
1 (a) To which group of polymers do Polylactide (PLA) and Biopol belong? (1 mark)
1 (b) (i) Give an application for one of the polymers named in part (a). Polymer and application. (1 mark)
Polymer - BiopolApplication - food packaging
1 (b) (ii) Give two reasons to explain why this polymer is suitable for the application youhave given. (2 x 2 marks)
Reason 1 - Biopol can be blow moulded to make bottles to contain food products
Reason 2 - Food packaging has a short lifecycle. It may go to landfill and therefore to protect the environment, such polymers need to biodegrade.
With reference to food packaging, explain how designers are reducing the environmental impact of their products. [4 marks]
Use of easily recyclable materials such as cardboard where possible
Reduction in the use of oil-based plastics which are finite
Reducing number of materials used to aid sorting in preparation for recycling (composites are harder to recycle)
Standardised shapes for efficient transportation meaning more packages can fit inside vehicles and reduce product miles.
Use of smart packaging to preserve food for longer
Use of biodegradable polymers such as corn starch polymer
Reduce size of packaging so contents are secure but there isn't excess or unnecessary waste
Define what is meant by the term thermoplastic material? [2 marks]
A thermoplastic is a polymer that can be reshaped by the application of heat. It has a loose monomer chains that will reform when heated & therefore can be recycled.
Name a thermoplastic material and an application it is used in. [2 marks]
ABS - Casing for a vacuum cleaner
Explain why potatopak is suitable material for the manufacture of disposable cutlery (3 marks)
Potato Pak are biodegradable where they can decay when disposed of naturally under weather conditions such as moisture, oxygen and sunlight so overtime there is no landfill or litter. It is sustainable as it can be regrown as crops which means it can be mass produced and it can be engineered so that it can be enhanced or programmed by computers therefore making the production quicker. It does not harm the habitat or wildlife therefore it is sustainable, and no additional process or energy is needed to manufacture so no toxic caused.
Give two reasons why x-ray testing would be a suitable post-production test for a welded bridge structure. [2 marks]
X-ray testing allows the operator to visualise internal defects within a welded joint. X-ray testing is an NDT(Non-Destructive Testing method used to test products that can then be sold rather than recycled etc. A welded bridge structure is produced on a one-off basis meaning NDT) testing is ideal.
Evaluate how well the lift interface has been designed to be inclusive to all users (6 marks)
All buttons are the same colour making it hard to distinguish between them for visually impaired users.
The green LED screen is very clear on the black background.
Colour clearly visible on the buttons such as red indicating call when stuck in lift, for safety use.
LED showing on buttons next to numbers when clicked making it easier for passengers to know where it is going.
Clear readable symbols such as doors close and open symbol.
It has braille next to the numbers
The location is not suited to the wheelchairs or short height users.
Evaluate how well the interface has been designed to be inclusive to all users (6 marks)
•All buttons are the same colour making it hard to distinguish between them for visually impaired users.
•The control panel is flat for ease of cleaning, but this means the tactile interaction with buttons is lost making it harder to navigate around the panel for visually impaired users.
•The use of grey for all buttons makes it hard for children or visually impaired to distinguish between controls.
•As all buttons are the same rectangular shape distinguishing between them is very difficult.
•The black text on dark grey background means that it is hard to read for most users (not just the visually impaired).
•It is not clear how to change features such as power settings or length of time with the current buttons.
•The green LED screen is very clear on the black background.
Evaluate the following techniques for rendering a design:
•Using computer aided design (CAD)
•Hand generated (6 marks)
•Costly software and powerful computer processors are needed which can make it prohibitive.
•A high degree of competency in the use of the CAD software is needed to fully exploit all functions which may require lengthy training.
•Software may require purchased credits to perform high quality renders adding to the cost of the technique.
•Photo realistic renders are feasible. A huge range of material textures are available.
•Light sources and shadow can be represented.
•Rendered images can be placed into scenarios.
•CAD can be emailed/shared for instant feedback from clients/focus groups. CAD renders can be easily edited.
•Need power, computer, software to be able to do it
•A great deal of skill is needed to proficiently achieve a high quality render using markers, coloured pencils or inks etc.
•Specialist paper is needed to avoid the colours running.
•A hand rendered drawing can be time consuming to complete and can take longer than CAD.
•Tone and shadow can be achieved through a wide range of available colours.
•Flat smooth colours can be achieved with the use of a blender.
•Minimal specialist equipment is needed making the process more affordable than CAD.
•Hard to edit the render and usually would require restarting
•Can be done in most places
Describe two ways that 3D computer aided design (CAD) software can assist in the design of bespoke products. [4 marks]
1.Original artwork can be scanned and copied into software so that drawings are digital developed and editing tools are used such as copy, paste, mirror, rotate, scale and array to allow designers to change drawing quickly.
2.Has libraries of standard component drawings to complete designs useful for design engineers and designers can use layers to draw on for complex designs such as electronic circuits and architecture.
Explain the benefits of using CAD modelling in the development of a remote control (6 marks)
- allow modelling to test ergonomics (shape texture/button spacing)
- hollow construction possible to test fit for circuit/battery/balance in the hand
- model can be use to get consumer feedback
- production engineers may use model in developing tooling
- much faster than traditional modelling in Styrofoam by hand
- allows the use of colour pigments in the printing plastic and decals to give a realistic prototype
Explain why polymorph is suitable for modelling a prototype toothbrush handle. Your answer should make reference to:
•Product Manufacture (8 marks)
Manufacture: Polymorph is thermoplastic and can be shaped many times reducing wastages from multiple prototypes as they can be reused. It is supplied as granules that can be heated in hot water and when removed from hot water, it can be shaped by hand or moulded into almost any form; when cooled it becomes solid
Function: Details like grip can be applied before it cools by pressing a texture into polymorph for ergonomic features; it can be tested to improve functionality for different users. Once it has set, it becomes tough material which can withstand being dropped; this is useful as it may be passed around and handled.
Aesthetics: When set, it is extremely tough, impact resistant, can be filed and drilled allowing finer details to be applied so it looks realistic. Polymorph will give similar finish to injection moulded polymer when sanded and painted, which is useful for showing a realistic finish such as different colours can be presented to a client to help them visualise final product and give preferences.
Explain why electroluminescent wires are suitable for use in shop signs. (4 marks)
The glow from electroluminescent wire is highly visible which makes shop signs stand out. They are available in wide range of colours which makes customisation of shop signage easy to achieve. They are waterproof which makes them suitable for use in outdoors where they are likely to encounter the rain. They are also very flexible which enables them to be easily bent into the desired shapes for the shop signs.
Give three reasons why polymorph may be used in the modelling of an ergonomic grip. (3 marks)
1.Polymorph can be tested to improve functionality of the grip many times as it can be shaped and refined many times, thus reducing wastage of contents.
2.Polymorph is an extremely tough and impact resistant material when it is set, meaning the grip would not get deformed easily.
3.Polymorph can be filed, drilled and painted so it gives similar finish as injection moulding, so it helps client to visualise final ergonomic grip design and give preferences.
Analyse and evaluate the suitability of phosporescent pigment for use in indoor emergency signage. (6 marks)
Give two reasons why phosporescent pigments are used in signs. (2 marks)
Absorbs light energy during the day and re-emits the light energy when it get dark.
Used in signs for safety purpose at night like road signs to give information to the drivers at night for directions and warnings.
Used in signs for emergency escape in situations like fire escape so it guides people indoor where to escape in order to protect themselves from fire, smoke, earthquakes or other emergencies.
It is an economical way of providing direction and guidance in the event of a power failure.
It gives a luminous signal that is infallible and that doesn't need any maintenance.
The photoluminescent signals and adhesives for emergency evacuation charge very quickly under any kind of light and will glow longer than it took them to load up.
They don't need any care nor electrical power and have a very long lifetime. A simple cleaning is sufficient.
The photographs below show two baby feeding spoons one is made from metal one spoon is made from a polymer with a smart material - explain why spoon b may be more suitable than spoon a for this application (5 marks)
Safety: Spoon B changes colour with heat because it has a thermochromatic pigment which is a safety feature. The metal spoon stays the same colour regardless of temperature but spoon B alerts the user if the spoon is hot by changing colour. The colour change indicates it is too hot to go in the baby's mouth. With the metal spoon the user may need to taste the food and could then transfer germs to the baby. Furthermore, the colour change shows the spoon is hot but as it is a polymer it is an insulator so the user will not get burned. The user does not know without touching it if the metal spoon is hot or cool. The colour changing pigment can be applied to spoon B during the injection moulding process but the metal spoon would have to have this applied after the spoon is manufactured as an additional process. This would be more time consuming, expensive and require additional materials.
Give three benefits of stock forms for a manufacturer (3 marks)
1.Uniformity of material sizes across countries or suppliers
2.Material form can be transported more easily once converted into stock forms rather than raw material (e.g., whole tree trunk)
3.Standard stock sizes are less expensive than specialist sizes as they are processed in large quantities, so less waiting time.
PAR is a stock form of timber. What does PAR stand for? (1 mark)
Planned All Round
Explain why UV varnishing would be used as a finish on a magazine cover (4 marks)
It gives smooth glossy aesthetic which gives a sense of quality and nice feel.
Good abrasion resistance to prevent smudging or wear
It can be recycled making it sustainable
It is waterproof without getting papers soaked inside
State two reasons why Danish oil is used as a surface finish for timber (2 marks)
It maintains natural appearance of the timber as it soaks into the wood and enhances the grain.
It is available in clear and colour tints. Although it is not a very hardwearing finish, regular application and subsequent coats build up a matt, water resistant finish.
Define each of the following terms:
*patent (3 marks)
Copyright - a legal right that provides protection for material such as books, computer code, photography, drama, music, films, TV programme, etc. Up to 70 years, ask permission to use it.
Trademark - protects logo/series of words that is unique identifier of company or brand. Protects against counterfeiters, renew every 10 years. Unregistered cover the appearance.
Patent - government issued protection order covering new idea or invention. 20 years legal protection - detailed parts drawing, capable of industry.
Explain how BSI certification impacts on the purchase of a child's car seat by a consumer. (6 marks)
Consumers will want to ensure that their product is safe and fit for purpose.
BSI certification shows that the product has been rigorously tested before being able to be sold.
It reassures the consumer that the product will be up to date and meet current safety regulations
It reassures consumers that the product will undergo ongoing tests and any faulty products are recalled, providing piece of mind to consumers
BSI certification will increase a brand's reputation by it becoming synonymous with a company that invests in testing and produce high quality safe products for consumers.
The company can display the kitemark on its product and packaging, which consumers will associate with a safe and secure product and its presence is often a deciding factor when making a purchase over other product brands/models.
BSI standards are updated periodically which will reassure consumers that current legislation is being met and this in turn ensure the product is fit for purpose.
Customers may go back or look for the same brand again if satisfied and give good feedback for others to follow. The company can become a market leader in that field.
Explain the safe work practices necessary to protect workers when using solvent adhesives (6 marks)
Workers must wear personal protective equipment (PPE) such as eye protection and protective clothing like gloves which the adhesives may be irritant to skin or it can be toxic and corrosive)
Workers must be trained how to use adhesives so they must be aware of COSHH guidance that governs their use, storage and disposal.
Store adhesives in a strong sealed containers in the COSHH cupboard and containers must be labelled so workers can identify potential risk or hazards
Well ventilated area as the highly flammable vapours can be released so ensure no naked flames are present
They must establish procedures and evacuation routes in case of a solvent adhesive spill
Keep a record of any accident and report it via RIDDOR to HSE, so it minimizes exposure to future risk
State two safety precautions when joining acrylic using Tensol cement (2 marks)
Store in airtight lockable cabinet
Wear gloves to prevent skin damage
Wear goggles to prevent fatal eye injury from the cement
Name? (stalk with flower stars and 'e' in the middle)
Name: EUROPEAN ECO-LABEL
Voluntary label of environmental excellence.
Promotes the circular economy
Generate less waste and CO2
Products that are durable, easy to repair and recycle.
Possible applications: Detergents, electronic equipment, textiles
Name: FOREST STEWARDSHIP COUNCIL
International non-profit organisation.
Promotes responsible management of the world's forests. Protect habitats, indigenous people/workers rights
Card based packaging egg boxes, timber-based materials
Name? (energy chart rainbow colourings)
Name: ENERGY LABEL
EU Directive, Energy consumption labelling scheme. Energy efficiency ratings awarded, also noise emissions, water consumption
fridges and freezers
Give three reasons why consumers may look for the FSC logo on products they purchase [3 marks]
1.FSC protects the rights of indigenous people, workers and habitats.
2.FSC gives assurance that they can buy wood products from all types of forest with a clear conscience.
3.FSC is an international non-profit organisation and promotes responsible management of world's forests.
Name the measuring device shown in figure 10 and give a specific quality control application for it (2 marks)
Vernier Caliper - checking or measuring the dimensional accuracy of an internal diameter or an external diameter or the depth of a blind hole
Explain how two different quality control checks are used to monitor consistency during the injection moulding process. (4 marks)
Mould markings to check if there is any marks on the mould and get rid of moulds that are ruined or adjust them. Mould temperature is monitored and adjusted using cooling. Use of mould flow analysis prior to mould design to check polymer flow when injection moulding. Visual inspection - the process of looking over a piece of equipment using the naked eye to look for flaws.
State two quality control checks that would be used on a sheet of medium density fiberboard. (2 marks)
1.Material checks (visual, material, colour matching)
2.Surface finish check (profile projector/microscope may be used to ensure that unacceptable ridges are not present.
3.Dimensional accuracy checks (using digital measuring device go/no go gauge, coordinate measuring machinery)
Define the terms quality control and quality assurance (2 x 2 marks)
Ensures that monitoring, checking and testing of materials, equipment and components are carried out during production.
This means they conform to acceptable tolerances for example visually checking random samples for visible defects on the production line at regular intervals.
Aims to avoid waste and get it 'right first time'
Procedures are put in place to ensure products are made precisely within an acceptable tolerances.
For a specific application, give two reasons why a go-no-go gauge would be used. (3 marks) [contains diagram]
2.Hole diameter (ring)
Checking a dimension is within a tolerance range
Accurate use of go-no-go gauge requires little training
Quicker than digital device such as vernier caliper
Requires infrequent recalibration
State four ways a manufacturer may use quality assurance procedures and policies to reduce the rate of errors during die cutting of packaging nets . (4 marks)
Set regular visual inspections
Regular staff training
Check and set blade alignment
Simulate production runs prior to manufacture to check for bottle necks and problems
Set and check tolerances for blade pressure
Set intervals for changing the cutting blades
Set regular print quality and alignment checks
When producing a die cut package, three different, independently occurring faults are possible with these problems
- Fault A 1/100
- Fault B 1/100
- Fault C 1/500
A and B are minor faults which must be monitored but will only fail quality control (3 marks)
1/100 x 1/100 = 1/10000
1/10000 + 1/500 = 21/10000
21 products are expected to fail quality control
State three characteristics associated with products from the Memphis postmodern design group. (3 marks)
Use of zoomorphic or anthropometric forms to create 'friendly' fun designs
Simplistic use of geometric forms to produce complex juxtapositions.
Production of 3D art form rather than purely functional products - 'Form before function'
Uses modern conventional materials like vinyl, MDF
Bookshelves by Ettore Sotsass, Juicy Salif by Philippe Starck
Contrasting textures and materials, use of pattern as surface decoration, play of different bright and bold colours.
Figure 4 (modernist) and Figure 5 (post-modern) show chairs from the modernist and post modernist design movements - evaluate how well each of the chairs meets the design principles of the movement to which it belongs
Figure 4 Modernist: Form follows function, the product is clearly identifiable as a chair due to the seating area, back rest and arm rests. Everyday objects for everyday people, the materials used, stainless steel tubing and rattan seat covering are inexpensive thus the product is affordable for most people. Products for a machine age, the manufacture process involves simple pipe bending which is a standard tool, the seat parts would be simply attached with screws through drilled holes on a pillar drill which is a standard piece of tooling. Both can easily be set up for batch production. Geometrically pure forms, the seat and back rest are both square shapes. The seat when viewed from the side, front and top is made up of a series of square shapes. Regular curves or arcs of a circle are used in the frame and arm rests.
Figure 5 Post-Modernist: Aesthetics over function, on first glance it is unclear if this is a seat or a piece of art. The way the back tubing curves towards the front make the product look unstable. The arm rests look like decorative spheres and it does not look as though the arm could rest very comfortably as only the elbow would be supported. Designs influenced by fashion and media, the chair has a futuristic or pop art theme. Geometric shapes, the chair uses circles in the seat, backrest, arm rests and the loop of low carbon steel back to front support.
Using an appropriate product example, explain how it conforms to the design theory of 'form follows function'. In your answer, you should reference a specific design movement. [4 marks]
It is expected that responses may refer to the appearance or aesthetics of a product being dictated by its ability to fulfil its purpose.
Better responses will refer to a lack of ornamentation and a minimalist approach to design.
Reference may be made to the Bauhaus design school and possibly other functionalist designers such as Dieter Rams.
Dieter Rams states that 'good design is understandable'. Use a specific product example to explain what is meant by this. [3 marks]
Well-designed products are easy to use
'Understandable' means that the design is intuitive and reduces the cognitive load of the user
The function of a well-designed product is self-evident
A good design does not require instructions
There is a focus on user experience
The product communicates its purpose intuitively
Product examples: TV remote control, pelican crossing, electric toothbrush, car heater controls
Explain how developments in manufacturing techniques affected the work of Bauhaus designers. [6 marks]
A major influence on their furniture designs was large scale wartime adoptions of metal tubing as a replacement for food which was sometimes weak due to its irregular grain structure. Bauhaus designer associated with experimentation with the use of steel tubing for furniture. Marcel Breuners B3 Wassily chair influenced by bicycle design has become iconic representation of how the inherent strength and elasticity in tubular steel can improve on traditional furniture manufacturing materials and techniques and facilitate mass production. Use of basic rectilinear forms and primary colour schemes to produce abstract artistic pieces. Designs were largely asymmetrical. Second World War brought about severe shortage of many goods - rationing was therefore introduced to provide a fair distribution of essentials. Due to bombing raids, there was a shortage of timber for furniture manufacture and switching of a great deal of manufacturing capacity towards war effort. The utility of furniture scheme designed to ensure basic simply designed products were available in response to the shortages being experienced. Utility furniture designed available to those had lost their furniture in bombing raids. Designed to be strong; 'fitness for purpose'
Explain how the work of Philippe Starck reflects the postmodern design movement [6 marks]
He is a French product designer whom he has famously worked on kitchenware for Alessi, and some of his designs can be regarded as postmodern sculptural pieces focusing on aesthetics before function. However, his work in architecture and interior design aimed at democratic design for the population rather than elite. Starck challenges perceptions and aims to enhance the experience of the user through playful and thought-provoking design. His desire to experiment with modern materials and manufacturing processes make him highly influential designer. For example, his product is Juicy Salif which is a single-piece aluminum casting after he squeezed lemon juice over squid in a restaurant - it functions successfully although there are flaws. The key features of his Juicy Salif product - Very high centre of mass and becomes unstable, head of the juicer is large enough for a lemon however orange much of fruit is missed due to small diameter, the form of the product is striking and lends itself to being displayed, legs at angle to prevent juice running down legs. Widens the base of juicer to increase stability and allow glass to be placed
ØProduct Analysis - compare and evaluate two similar products but made out of different material and using different processes. Discuss advantages and disadvantages.
ØTalk about each product separately - bullet points but write in full detailed sentences. Only evaluate points you are asked about (safety, ergonomics, manufacturing, microelectronics, materials) [12 marks]
Compare the two drills shown. In your answer you should refer to:
Mains powered drill
Die cast aluminum which is a thermal conductor so heat transfers though it quickly. Handle does not have contrast material or grip making it harder to hold. Quite big and heavy so it requires two hands to hold. Chuck key is an additional tool which is less convenient as it can get lost. It can only be used when there is a power supply and is restricted by wire making it less portable. Centre of mass will make the drill front body heavier, so it causes strain on the hand.
It is an electrical conductor which is not ideal due to risk of wiring issues and burns. Use of standard crew fixing increases risk of user disassembling product and accessing live wiring. It would have to be lent down making access harder when picking up.
Longer handle for full hand grip and centre of mass is distributed from body to base on the handle so less strain for hand when carrying it. It is wireless therefore is portable indoors and outdoors without the need for power and can be recharged from the power when required. Injected moulded so quicker process in large scale production and gives thermoplastic body. Keyless chuck is convenient as it is integrated into the drill without any additional tool. It has moulded texture to give grip. Contrasting colours with background, contrasting font is used for torque settings to stand out against background colour increasing ease of use.
Lower power input of 9.6V than 230V to reduce risk of burns or electric shock. The material ABS is an insulator so can prevent handle getting too hot causing burns and gives neutral temperature. Security fasteners enables secure and safe assembly and disassembly by the user without having drill bits on loose and less vibration or tampering while in use. Flat base to allow it to stand when not in use so that it is easy to pick it up.
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