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Woodwork exam past papers kcse

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444/1

WOODWORK

PAPER 1

JULY / AUGUST 2011

2 ½ HOURS

MATUNGULU DISTRICT FORM 4 MULTITARAL EXAM

Kenya Certificate of Secondary Education

WOODWORK

PAPER 1

INSTRUCTIONS TO CANDIADTES

Candidates should have the following for examination:

  • Answer booklet,
  • Drawing instruments,
  • Drawing paper A3,
  • This paper has two sections;  A and B.
  • Answer ALL questions in section A.  From section B, answer questions 11 and any other three questions.
  • All dimensions are in millimeters unless otherwise stated.

This paper consists of 5 printed pages

Turn Over

SECTION A ( 40 MARKS )

Answer all the questions in this section.

1.         (a) State two safety precautions to be observed when using sharp –edged tools.                 ( 1 mark )

            (b) Mention three things you should do in the event of a fire out-break in the workshop.    ( 1 ½ mks)

2.         (a) Mention three factors that should be considered by a designer when selecting a

     finish for an article.                                                                                                            ( 1 ½ mks )

            (b) List two advantages of plain sawing.                                                                                ( 1 mark )

            (c ) List two reasons why cutting list is important in a bill of materials                                 ( 1 mark )

3.         (a) By means of neat sketches show THREE natural and two seasoning timber defects.     ( 2 ½ mks)

            (b) Give three necessary requirements for self-employment in wood industry.                     ( 1 ½ mks)

4.         (a) The shape shown in the figure below is to be made using a piece of timber

                        Fig. 1

            Sketch it and indicate by arrows the directions of smoothening the curves with a

spoke shave.                                                                                                                            ( 1½ marks )

(b) By means of neat sketches show the kerf made by rip and cross cut saws.                     ( 2 marks )

5.         Name five tools used in veneering and state the use of each.                                                ( 5 marks )

6.         (a) Sketch each of the following fastening devices and state their common use.

                        (i) Escutchion pin

                        (ii) Coach screw

                        (iii) Uphostery nail                                                                                                      ( 3 marks )

            (b) Give TWO reasons why edge moulding  are used at the edge of manufactured

    boards when making table top.                                                                                           ( 1 mark )

7.         (a) Name TWO types of jaws in a brace and state when each is used.                                  ( 2 marks )

            (b) The pattern shown below is to be used to decorating a drawer front.  Using sketches,

     show how it will appear when

                        (i) Relief curved

                        (ii) Incise curved                                                                                                         ( 3 marks )

            Fig. 2

2.

8.         (a) Explain the meaning of the number printed on the back side of abrasive paper.             ( 1 mark )

            (b) Explain what you understand by the following terms:-

                        (i) Crafts man

                        (ii) Apprentice                                                                                                             ( 2 marks )

9.         (a) The figure below shows a cross section of a hole through a piece of wood. 

     Label the parts “A” an “B”                                                                                                ( 1 mark )

(b) State four specifications necessary when ordering for workshop tools.                           ( 2 marks )

10.       (a) The figure below shows two views of an object drawn in third angle projection

                        Fig 4.    End view

            Sketch an isometric view of the object resting on corner “A”                                                (3 ½ marks )

            (b) Make a neat sketch for each of the following having joints.

                        (i) Framing

                        (ii) Widening

                        (iii) Lengthening                                                                                                         ( 3 marks )

3.

SECTION B ( 60 MARKS )

Answer questions 11 (Compulsory) and any other THREE questions in this section.

You are advised not to spend more than 25 minutes in question 11.

11.      

Fig 5 shows part of a frame where regular mortise and tenon joint at A and dove tail Tee halving joint at B are used.  Draw FULL SIZE the exploded isometric views of the joints at A and B in the direction shown by arrows.                                                                                                                                             ( 15 marks )

Insert all the dimensions in each drawing.

12.       (a) List down six ways in which fungal attack on timber can be prevented.                                     ( 3 marks )

            (b) With the help of sketches, describe six methods of joining two boards edge to edge.    ( 12 marks)

13.       (a) With the aid of sketches, illustrate four conditions which required the grinding

     of jack plane cutting iron.                                                                                                  ( 4 marks )

(b) Knots reduce the commercial value of timber.  Explain one area where timber with

       knots can be used, where structural consideration is negligible.                                     ( 2 marks )

            (c )       (i) Explain how you can assemble a drawer to squareness using ungraduated stick. ( 5 marks )

                        (ii) Explain how you can assemble a cap iron of a jack planne.                                  ( 4 marks )

4.

14.       (a)        (i) State three cases or situations where drilling holes is necessary before driving

     nails into the wood.                                                                                               ( 1½ marks)

(ii) Name two precautions to be observed when using each of the following

            – Synthetic lesin adhesives

            – Rubber base contact adhesives.                                                                    ( 3 marks )

            (b)        (i) Illustrate the sharpening process of both cross cut and rip saw.                            ( 3 marks )

                        (ii) Outline the procedure of making plastic laminated sheets.                                   ( 5 marks )

15.       The figure shown below is a hospital bedside unit made of campor.  The backing is of 3mm thick

plywood and the door has a glazed rebated on the inside and held in place by beading.  Estimate the

cost of material required to make the unit.  Allow 10mm of length only.  All members are made of

22mm thickness.

            10

NB: The plinth has 10mm hung on all sides.

Prices of materials:

            Camphor 150 x 25 per running metre Ksh. 50.00

            Camphor 75 x 25 per running metre Ksh. 30.00

            3mm plywood 2400 mm x 1200mm sheet Ksh. 50.00

            3mm glazing 300 x 300 pieces Ksh. 100.00

                                                                                                                                                            (15 marks )

5.

444/1

WOODWORK

PAPER 1

JULY / AUGUST 2011

MATUNGULU DISTRICT FORM 4 MULTITARAL EXAM

Kenya Certificate of Secondary Education

WOODWORK

PAPER 1

MARKING SCHEME

SECTION A ( 40 MARKS )

1.         (a)        – They should always be kept sharp.

                        – Cutting should be done away from the body.

                        – They should be carved pointing downwards

                                                                        Any 2, each ½ mark ( ½ x 2 ) = 1 mark

            (b)        – Rise the “alarm” and shout “fire”

                        – Attack fire if not risky.

                        – Switch off the main switch if visiable.

                        – Leave the room and never run back unless authorized.

                                                                        Any 3, each ½ mark 3 x ½ = ( 1 ½ marks )

2.         (a)        (i) Safety

                        (ii) Maintenance

                        (iii) Ease of application

                        (iv) Appearance i.e clear opaque, matt etc.

                        (v) Durability

                                                                        Any 2 each ½ mark  = ½ x 2 = 1 mark

            (b)        (i) Suitable for mass production.

                        (ii) It is simple.

                        (iii) Most economical method

                        (iv) It  does not require a lot of time

                                                                        Any 2 each ½ ( ½ x 2 ) = 1 mark

            (c )       (i) Acts as guide to the person who is preparing the material.

                        (ii) Form the basis for estimation of cost of making an item

                        (iii) Avoid wasting time and material.

                                                                        Any 2, each ½ = 1 mark

This paper consists of 12 printed pages

Turn Over

3.         (a) Natural defects

                        (i) Knots

                        (ii) Cup shakes /

                        (iii) Heart shakes

                                    Cup shakes      Heart shakes

Cross grain                                                                                                      Diagonal grain

                                                                        Any three each ½ mark = 3 x ½ = 1 ½ marks

            (ii) Seasoning defects

                        Cupping                                                                                  Springing

2.

            Bowing                                                                                               End / surface checks                                                                                                                                       End checks   surface checks

Twisting

                                                                                                Any 2, each ½ mark,= 2 x ½ = 1 mark

            3(b)      – Capital

                        – Skill and knowledge

                        – Market

                        – Labour

                        –  Materials

                        – Tools                                                             Any 3, each ½ mark = 1 mark

4.         (a)        ½    ½    ½  

                        Any 3 each ½ a mark

                                    Award marks for the arrow as shown 3 x ½ = 1 ½ marks

            (b)        Cross cut Kerf             Rip saw  Kerf

                        Each Kerf showing grain direction     1 mark

                                                2 x 1 = 2 marks

3.

5.         (i) Veener hermmer

                        Use – Flattens the veneer forcing out air bubbles and surplus glue

            (ii) Veneer cramp

                        Uses – To press down the veneer  until the glue sets.

            (iii) Toothing plane – Use roughnes  the surface that is to receive a veneer to form key for

     the adhesive to be used.

(iv) Veneer knife – Used for cutting veneers

(v) Straight edge – Used for marking and as a guide when cutting  pieces of veneers

(vi) Veneer saw – Used for cutting thick veneers.

(vii) Tapping stick – Used to press the tape in place where joining veneers edge to edge

(viii) Gummed tape – Used to hold down veneers at edge to edge joints until the glue sets.

                                                            Naming of tool = ½ mark                   Stating the use = ½ mark

                                                            Any correct five = ( 5 marks )

6.         (a)        (i)

                                                            Escutcheon pin; – used

                        Coach screw; use to fit key hole plates to doors, rail carriage and coach building.

                        (ii)                                                                                Uphostry nail:  Used to fix leather cloth

uphostry and similar material to wood

                                                            Each neat correct sketch – ½ mark = 3 x ½ = 1 ½ marks

                                                                                    Each correct use stated – ½ mark, 3 x ½ = 1 ½ marks

            (b)        Decorative       (improvement )

                        Strength

                        Safety

                        Durability                                            Any 2 each ½ mark = 2 x ½ = 1 mark

7.         (a)        – Alligator – holds square sharks

                        – Universal – Holds both square and round.

                                                Stating – ½ x 2 = 1 mark

                                                Giving use – ½ mark = ½ x 2 = 1 mark                                   ( 2 marks )

(b)        Incised carv`ed pattern cut into and below the surface

            Award 1 ½ marks for each correct pattern     1 ½ x 2= 3 marks

4.

8.         (a) The number indicates the size of abrasives grains used in making the paper.       1 x 1 = 1 mark

            (b) Craftsman

                        A person who has the ability to do practical work to a high level of efficiency and can perform

a manipulated skill to an existing and consistant standards.

                        Apprentices

                                    A person who learns basic skills to certain trade by working with an experienced

person.  He only learn skills                            Each 1 mark = 2 x 1 = 2 marks

9.         (a)        “A: – Counterbore hole

                        “B” – Pilot hole

                                                                                                ½ mark for each         

 Total mark = 1 mark

            (b)        Tool name

                        Tool size

                        The manufacturer

                        Its function

                        The material finish                                                      ½ mark for each         

Total mark = 2 marks

10.      

            – Proportion     1 mark

            – Point A being the lowest      1 mark

                        Correct view 1 mark

                        Isometric axis ½                                              Total marks = 3 ½ marks

5.

11.      

                        22  45

6.

            Selection and proper use of scale x 1                          = 1

            Each joint correctly and accurately drawn 4 x 2        = 8

            Correct dimension 1 mark for each member 1 x 3      = 3

            Proper use of lines       – Construction line x 1

                                                – Dimension line x 1                3

                                                – Outline line  1

                                                                                                15

12.       (a) Prevention of fungi attack

                        (i) Use timber with a moisture content below 20%

                        (ii) Paint or varnish timber in service to prevent moisture entry.

                        (iii) Eliminate all source of dampness .

                        (iv) Use durable timber

                        (v) Ensure free air circulation around the wood

                        (vi) Use preservative – treated timber

                                                                                    Any six – each ½ mark ( ½ x 6) = 3 marks

            (b).       (i) Plain rubbed joints

                        (ii) Feathered or loose tongued joint

            (iii) Tangue and groove

            (iv) Rebatated joint

7.

            Dowelled joint

                        Dovelle pieces                         Dowel hole

            Slot – screw joint

                        Screw slot                   Screws fixed to frame

            Naming of joint ½ mark ( ½ x 6) = 3 marks

            Each correct sketch 1 ½ ( 1 ½ x 6) = 9 marks

13.       (a)  (i) Nicked edge                                                                (ii) Cutting edge not 900 (overstated)

            (iii) Short bevel                                                                       (iv) Long bevel

8.

            (v) Rounded edge

                                                                        Any 4 condition each, 1 mark = 4 marks

            (b)        – Ceiling boards  – The knots add beauty

                        – Table tops – Especially  when clear varnish is applied.

                        – Partationing rooms – The knots add beauty  as they will be exposed under

   clear varnish application.

                                                                                    Any 2, each mark 2 x 1 = 2 marks

            (c )       (i) Place the glued drawer on sash cramps

                        (ii) Using the ungraduated stick, measure the distance across one diagonal and

     mark on the stick X cm

(iii) Measure the other diagonal and mark on the stick Y cm.

(iv) The mean distance between X and Y is the correct diagonal.

            \ correct diagonal  =   Y  –  X  +  X

                                                     Z

(v) With the clamp adjust the diagonals to the correct value.

                                                                        Each step 1 mark, ( 5 x 1) = 5 marks

            (d)       (i) Place the cap iron at 900 to the cutting iron.

            Slide the cap iron screw through the slot of the cutting iron.

9.

            – Rotate the cap iron, then push it forward to 1-2mm clearance

            – Lock the screw firmly.

                                                                                                Each step 1 ( 1 x 4) = 4 marks

14.       (a)        (i)         – To thin wood

                                    – While nailing at the edge.

                                    – When using large gouged nails.

                                    – When timber is over dry.

                                                                                                Any 3, each ½ mark = ½ x 3 = 1 ½ marks

                        (ii) Synthetic resins

                                    – Handle them with care.

                                    – Remove splashes with soap and water immediately.

                                    – Rubber groves / barriers creams should be used when prolonged constant with the

  glue is unavoidable.

                                                            Any 2 each 1 mark ( 2 x 1) = 2 marks

                        Rubber based

                                    – No smoking when applying

                                    – Proper / adequate ventilation

                                    – Make use of resipirators

                                    – Do not use near open fire

                                                                                                Any 2, each 1 mark ( 2 x 1 ) = 2 marks

            (b)        (i) Rip saw         900

                        (ii) Cross cut saw        Tile  700   saw

10.

                        Each 1 ½  marks, ( 1 ½ x 2 = 3 marks

                        (iii)       – Take three sheets of paper and impregnate them with thermosetting resin.

                                    – Take other fillers or base sheets then impregnate  them with phenotic resin.

                                    – Over the fillers or base place the sheets with pattern impregnated with melamine resin.

                                    – A top paper layer impregnated with pure cellulose paper impregnated with

   melamine resin becomes transparent on curing.

– They are then subjected to extreme pressure and temperature.

                                                                                                Each step 1 mark ( 5 x 1 ) = 5 marks

            (c ) Three advantages of plastic laminated sheets.

                        – Decorative / beauty

                        – Easy to clean

                        – Protect the wood for absorbing moisture.

                        – Heat resistant

                        – Chemical resistance

                                                                                                            Any 3 each ½ mark ( 3 x ½ ) = 1 ½ marks

11.

HOSPITAL BESIDE UNIT

BILL OF MATERIALS

08/05/11

No.      No.      Materials                     SIZE               Cost per unit               Cost

            off                               L          W        D

1          4          Camphor         630      150      25                    75                    4 x 630 x 50

                                                                                                                              1000                      = 126

2          4          camphor          470      150      25                    75                    4 x 470 x 50

                                                                                                                              1000                      = 103.0

3          1          camphor          470      150      25                    75                    470 x 50

                                                                                                                            1000                        = 23.50

4          1          plywood          620      460      3                      500                  500 x 620 x 460

                                                                                                                          1200 x 2400              = 49.51

6          2          camphor          430      75        25                    30                    2 x 430 x 300

                                                                                                                                1000                    = 258

7          2          camphor          250      75        25                    30                    2 x 250 x 30

                                                                                                                              1000                      = 15

8          2          camphor          475      75        25                    50                    475 x 2 x 50

                                                                                                                              1000                      = 47.50

9          2          camphor          340      75        25                    3                      2 x 310 x 30

                                                                                                                              1000                      = 18.60

10        1          glazing             375      430      3                      100                  375 x 430 x 100

                                                                                                                            300 x 300                = 180

                                                                        Total                                                                Ksh. 821.10

Every correct column 1 mark 1 x 10 = 10 marks

                        Total cost        2 marks 1 x 1 = 2

                        Format tittle, date, heading each  1 ( 1 x 3) = 3

12.