Cambridge IGCSE Design and Technology 0445 — 2014 Oct/Nov Paper 3 · Variant 2

This document consists of 15 printed pages and 1 blank page. DC (NF/CGW) 94729/1 © UCLES 2014 [Turn over Cambridge International Examinations Cambridge International General Certificate of Secondary Education * 0 3 8 1 0 1 6 0 9 7 * DESIGN AND TECHNOLOGY 0445/32 Paper 3 Resistant Materials October/November 2014 1 hour Candidates answer on the Question Paper. No Additional Materials are required. To be taken together with Paper 1 in one session of 2 hours 15 minutes. READ THESE INSTRUCTIONS FIRST Write your Centre number, candidate number and name on all the work you hand in. Write in blue or black pen. You may use an HB pencil for any diagrams, graphs or rough working. Do not use staples, paper clips, glue or correction fl uid. DO NOT WRITE IN ANY BARCODES. Section A Answer all questions in this section. Section B Answer one question in this section. You may use a calculator. The total of the marks for this paper is 50. The number of marks is given in brackets [ ] at the end of each question or part question. For Examiner’s Use Section A Section B Total

2 0445/32/O/N/14 © UCLES 2014 Section A Answer all questions in this section. 1 Fig. 1 shows waste wood being cut out. A B Fig. 1 Name each tool labelled A and B in Fig. 1. A … B … [2] 2 Fig. 2 shows a butt joint being glued and nailed. Fig. 2 (a) Name the method of nailing shown in Fig. 2. … [1] (b) Give one reason why the nails are put in at an angle. … [1] (c) Name a suitable adhesive. … [1]

3 0445/32/O/N/14 © UCLES 2014 [Turn over 3 Fig. 3 shows a small plastic dish. Fig. 3 (a) Name a process that could be used to produce the dish. … [1] (b) Name a suitable plastic from which the dish could be made using the process named in (a). … [1] 4 A list of metals is given below. copper cast iron stainless steel duralumin From the list of metals select: (a) a ferrous alloy; … [1] (b) a non-ferrous alloy. … [1] 5 Fig. 4 shows the end grain of a piece of solid wood being planed. Fig. 4 Describe how the planing should be completed without splitting the end grain. … … … [2]

4 0445/32/O/N/14 © UCLES 2014 6 Complete the drawing below to show a tee bridle joint. [3] 7 Complete the table below by giving a specific name and a specific use for each saw. Tool Specific name Specific use [4] 8 Fig. 5 shows a wheelbarrow. The body of the wheelbarrow is made from mild steel. body Fig. 5 (a) Give one reason why the body of the wheelbarrow would need a surface finish. … [1] (b) Name a suitable surface finish for the body of the wheelbarrow. … [1]

5 0445/32/O/N/14 © UCLES 2014 [Turn over 9 (a) Complete the drawing below to show a back flap hinge. [2] (b) Give one advantage of a back flap hinge over a butt hinge. … [1] 10 Fig. 6 shows a marking knife. Fig. 6 (a) Describe one situation where a marking knife would be used to mark out wood rather than a pencil. … [1] (b) Name one other marking out tool that scores/cuts the surface of the wood. … [1]

6 0445/32/O/N/14 © UCLES 2014 Section B Answer one question from this section. 11 Fig. 7 shows a toy boat made mainly from wood. mast hull Fig. 7 (a) The mast is made from round section wood. (i) Give the technical term for round section wood. … [1] (ii) Name a waterproof adhesive that could be used to fix the mast into the hull. … [1] (b) Give two reasons why a template would be useful to mark out the shape of the hull. 1 … 2 … [2]

7 0445/32/O/N/14 © UCLES 2014 [Turn over (c) Fig. 8 shows the hull of the toy boat marked out on a block of wood. waste wood position of hole for mast Fig. 8 Complete the table below by naming one tool or item of equipment used for each process. Stage Process Tool or item of equipment 1 Cut off the waste 2 Make the hole for the mast 3 Make edges smooth [3] (d) Fig. 9 shows part of the hull and rudder. rudder hull Fig. 9 Add sketches and notes to Fig. 9 to show how the rudder could be fitted to the hull and be able to move from side to side. [2]

8 0445/32/O/N/14 © UCLES 2014 (e) Fig. 10 shows a different design for a toy boat. The toy boat has a vacuum formed hull and a separate deck made from polystyrene. deck hull Fig. 10 Give two properties of polystyrene that makes it suitable for the toy boat. 1 … 2 … [2] (f) Fig. 11 shows the separate parts of the hull and deck. deck hull position for hole for mast Fig. 11 Use sketches and notes to show how the hull would be vacuum formed. [8]

9 0445/32/O/N/14 © UCLES 2014 [Turn over (g) Use sketches and notes to show how the deck would be secured while drilling the hole for the mast. [2] (h) Give two safety precautions you must take when using polystyrene cement to join the deck to the hull. 1 … 2 … [2] (i) Describe two ways by which designers make toys appealing to young children. 1 … 2 … [2]

10 0445/32/O/N/14 © UCLES 2014 12 Fig. 12 shows a tray table. The tray is made from MDF and the stand could be made from either square section wood or square metal tube. tray Ø450 × 20 thick MDF A 400 Fig. 12 (a) (i) Use sketches and notes to show a method of construction at A if the stand was made from square section wood. [3] (ii) Explain why a sliding bevel would be a useful tool to mark out part of the construction at A. … … … [2]

11 0445/32/O/N/14 © UCLES 2014 [Turn over (b) (i) The stand could be made from square metal tube. State a suitable standard size of square metal tube. … [1] (ii) Use sketches and notes to describe how the construction at A would be brazed if the stand was made from square metal tube. [6] (c) Use sketches and notes to show how the stand could be fixed to the underside of the tray. You may choose to make the stand in square section wood or square metal tube. [6]

12 0445/32/O/N/14 © UCLES 2014 (d) Starting with the MDF block shown below, use sketches and notes to show how the tray could be produced. MDF block 450 × 450 × 20 [4] (e) The surface of the tray is covered with a plastic laminate. (i) Give two benefits of covering the MDF tray with a plastic laminate. 1 … 2 … [2] (ii) Name a suitable adhesive to join the plastic laminate to the MDF. … [1]

13 0445/32/O/N/14 © UCLES 2014 [Turn over 13 Fig. 13 shows a desk tidy made from two parts, tray A and tray B. Both trays are made from 6 mm thick MDF. partition X tray A tray B 240 320 150 Fig. 13 (a) Give two advantages of MDF compared with other manufactured boards. 1 … 2 … [2] (b) Give two items of research a designer would need to consider when designing the desk tidy. 1 … 2 … [2] (c) (i) Use sketches and notes to show how a 6 mm thick MDF base could be fitted to tray A. The edges of the base must not be visible. [3]

14 0445/32/O/N/14 © UCLES 2014 (ii) Use sketches and notes to show how the partition in tray A could be fixed to the sides and base. [3] (d) Use sketches and notes to show how tray A could be made to stack on top of tray B safely and securely. It must be easy to remove tray A from tray B. Include constructional details and sizes. [5] (e) (i) Name a suitable finish for the desk tidy. … [1] (ii) Describe how you would prepare the MDF to take your chosen finish. … … … [2]

15 0445/32/O/N/14 © UCLES 2014 (f) The MDF used for the desk tidy is only 6 mm thick. Use sketches and notes to show a suitable corner joint at X. [3] (g) Describe two functional improvements to the desk tidy shown in Fig. 13. 1 … 2 … [2] (h) Many desk tidies are made from plastic. Give two advantages of making a desk tidy from plastic rather than MDF. 1 … 2 … [2]

16 0445/32/O/N/14 © UCLES 2014 BLANK PAGE Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity. Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.

® IGCSE is the registered trademark of Cambridge International Examinations. CAMBRIDGE INTERNATIONAL EXAMINATIONS Cambridge International General Certificate of Secondary Education MARK SCHEME for the October/November 2014 series 0445 DESIGN AND TECHNOLOGY 0445/32 Paper 3 (Resistant Materials), maximum raw mark 50 This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the examination. It shows the basis on which Examiners were instructed to award marks. It does not indicate the details of the discussions that took place at an Examiners’ meeting before marking began, which would have considered the acceptability of alternative answers. Mark schemes should be read in conjunction with the question paper and the Principal Examiner Report for Teachers. Cambridge will not enter into discussions about these mark schemes. Cambridge is publishing the mark schemes for the October/November 2014 series for most Cambridge IGCSE®, Cambridge International A and AS Level components and some Cambridge O Level components.

Page 2 Mark Scheme Syllabus Paper Cambridge IGCSE – October/November 2014 0445 32 © Cambridge International Examinations 2014 Section A 1 A Mallet 1 B Chisel 1 [2] 2 (a) Dovetail [1] (b) For added strength, more difficult to remove [1] (c) Wide range available: PVA, accept trade names such as Resin W, Cascamite, animal glue [1] 3 (a) Press forming/moulding, plug & yoke, injection moulding, vacuum forming [1] (b) acrylic, polystyrene, ABS [1] 4 (a) stainless steel 1 (b) duralumin 1 [2] 5 Plane to the centre and stop 1 Repeat from opposite end 1 OR Use of scrapwood to support end grain 1 Plane straight across 1 [2] 6 Completed drawing of tee bridle. Award 1 mark for top, 1 for lower part, 1 for overall accuracy [3] 7 Tenon saw 1 Used to cut small pieces of wood to length 1 Hacksaw 1 Used to cut small pieces of metal 1 [4] 8 (a) To prevent corrosion/rusting [1] (b) Paint, galvanise [1]

Page 3 Mark Scheme Syllabus Paper Cambridge IGCSE – October/November 2014 0445 32 © Cambridge International Examinations 2014 9 (a) Completed drawing of back flap hinge. Award 0–2 dependent on technical accuracy. [2] (b) Larger surface area, screw holes staggered for additional strength [1] 10 (a) Used for cut lines on joints, marked waste, across grain 1 (b) Marking, mortise and cutting gauges 1 [2]

Page 4 Mark Scheme Syllabus Paper Cambridge IGCSE – October/November 2014 0445 32 © Cambridge International Examinations 2014 Section B 11 (a) (i) Dowel [1] (ii) Cascamite, [waterproof] PVA, synthetic resin [1] (b) Two reasons: speed, repetitive accuracy 2 × 1 [2] (c) Stage Process Tool or item of equipment 1 Cut off the waste Saw, chisel 2 Make the hole for the mast Drill 3 Make edges smooth File, glasspaper, disc sander [3] (d) Use of screw clearly shown 1 Use of washers fitted appropriately 1 [2] (e) Two properties: lightweight, water resistant, easily moulded 2 × 1 [2] (f) Stages include: set up mould/former on platen/in machine lower into position clamp plastic in position heat plastic, check flexibility raise platen/mould/former turn on pump wait to cool and release from mould/former Award 0–5 for detailed stages 0–5 Award 0–3 for technically accurate sketches 0–3 [8] (g) Deck must be clamped in position using G cramp Award 0–2 dependent on technical accuracy. [2] (h) Two safety precautions: gloves or barrier cream to protect skin, well ventilated space, face mask, goggles 2 × 1 [2]

Page 5 Mark Scheme Syllabus Paper Cambridge IGCSE – October/November 2014 0445 32 © Cambridge International Examinations 2014 (i) Two ways of making toys appealing: shape, colour, movement, noise Award 2 marks for one method well explained or 2 × 1 for two separate methods [2] 12 (a) (i) Suitable constructions: mortise and tenon, dowel Award 0–3 dependent on technical accuracy 0–3 [3] (ii) Sliding bevel can be adjusted and locked at a specific angle 1 Provides repetitive accuracy and speed 1 [2] (b) (i) 25 mm, 32 mm [1] (ii) stages include: preparation/cleaning of joint apply flux position on hearth/bricks heat up metal apply spelter leave to cool Award 0–4 for detailed stages 0–4 Award 0–2 for technically accurate sketches 0–2 [6] (c) Some form of metal plate or block of wood attached to underside 0–2 Stand joined appropriately to plate or block 0–2 Accuracy of technical detail 0–2 [6] Mortise and tenon directly into underside of tray = 0–2 (d) 2 methods: 1 mark out diagonals/circle 1 cut off waste 1 make round using sanding disc 1 technical accuracy 1 OR 2 faceplate turning: award 0–4 dependent on technical accuracy Stages include: prepare wood to ‘octagonal’ shape screw wood to faceplate set up on lathe set up tee rest turn to diameter [4] (e) (i) easily wiped clean, smooth surface, does not stain, heatproof, more durable 2 × 1 [2] (ii) Impact/Contact adhesive. Accept trade names such as Thixofix. [1]

Page 6 Mark Scheme Syllabus Paper Cambridge IGCSE – October/November 2014 0445 32 © Cambridge International Examinations 2014 13 (a) Smooth finish, consistent density, relatively easy to cut and shape, no splinters 2 × 1 [2] (b) Location, items to be stored: how many, what sizes. Accept any sensible research item carried out before designing. 2 × 1 [2] (c) (i) Use of grove or rebate. Either cut out or applied beads. Award 0–3 dependent on technical accuracy of drawing. 0–3 [3] Award 0–2 for glued/screwed inside Award 0 marks if base is visible (ii) Partition could be pinned and glued, housing or dowelled Award 0–3 dependent on technical accuracy of drawing. 0–3 [3] (d) Method of location for stacking: use of applied beads, metal pegs or wooden dowel 0–2 Constructional details and sizes 0–3 [5] (e) (i) paint, stain [1] (ii) use of glasspaper, different grades, wipe off dust 2 × 1 [2] (f) Due to lack of thickness, traditional joints are not practical. Methods should use applied strips and/or blocks to which the sides could be pinned or screwed and glued. Butt + glue = 1 mark. Butt + pin + glue = 1 mark. Butt only = 0. Mitre = 1 mark. Award 0–3 dependent on technical accuracy of drawing. 0–3 [3] (g) Two functional improvements: more partitions for increased storage, feet to lift off flat surface, handholds to assist lifting. Accept any sensible improvement showing understanding of the term ‘functional’. 2 × 1 [2] (h) Two advantages: ready coloured, easily moulded to shape, attractive colours available, durable material, requires no applied finish, easy to maintain/clean 2 × 1 [2]