WoodWork Paper 1 Questions and Answers - KCSE 2022 Past Papers

QUESTIONS

SECTION A (40 marks)
Answer all the questions in this section in the spaces provided.

1.                          
   1. Define the term "entrepreneurship".
   2. List four institutions from which one can get capital to start a small workshop. (2 marks)
2. Using sketches, show the difference between a marking gauge and a cutting gauge. (4 marks)
3. State two advantages of studying woodwork.(2 marks)
4. Using sketches show two faults that occur as a result of incorrectly fixing butt hinges. (4 marks)
5.              
   1. Distinguish between rounding and carving as used in shaping wood. (3 marks)
   2. Name two band tools used for each of the processes in 5(a)
6. With the aid of sketches, show the difference between an "end split" and a "check" on a timber board. (4 marks)
7.                        
   1. Figure 1 shows a stopped groove for a housing joint.
      
      Figure 1
      List four tools used to make the groove. (2 marks)
   2. Outline two features that differentiate a try plane from a smoothing plane.(2 marks)
8.              
   1. Give two reasons that may cause a hand saw to get stuck in a kerf while in use. (2 marks)
   2. Outline the procedure of cutting the work piece marked as shown in Figure 2 using a hand saw.(3 marks)
      
9.              
   1. State two reasons that may make a try square inaccurate. (2 marks)
   2. List four safety precautions to observe when using a circular saw.(2 marks)
10. Figure 3 shows a regular hexagon of sides 20 mm. Using F as the focal point, enlarge the figure in the ratio 5:3 and give the length of the new sides. (4 marks)
    
    
    SECTION B (60 marks)
    Answer question 11 on A3 paper provided and any other three questions from this section in the spaces provided. Candidates are advised not to spend more than 25 minutes on question II.
11. Figure 4 shows a shaped block drawn in isometric projection.
    
    Figure 4
    Draw Full Size the following views in the first angle projection: (15 marks)
    1. Front elevation in the direction of arrow F
    2. End elevation
    3. Plan
12.              
    1. Define the term overlay as used in woodwork. (1 mark)
    2. List four tools used in overlaying.(2 marks)
    3. Sketch and label a pictorial view of a table top decorated with an overlay.(6 marks)
    4. Sketch the following types of screws:(6 marks)
       1. Flat head screw
       2. Round head screw
       3. Oval head screw
13.                          
    1. State five advantages of seasoning timber. (5 marks)
    2. Using sketches, show the following timber seasoning defects and include the direction of grains:(6 marks)
       1. Springing
       2. Twisting
       3. Bowing
    3. Explain two methods of sanding a wide board manually.(4 marks)
14.                
    1. Outline the procedure of applying shellac polish on a table top (7 marks)
    2.      
       1. Illustrate the correct use of a hand brush when varnishing.(4 marks)
       2. Explain how to clean and store a hand brush after use.(4 marks)
15.                        
    1. Sketch and label a dovetail saw. (4 marks)
    2. Describe four characteristics of a dovetail saw. (4 marks)
    3. Figure 5 shows the outline of a rectangular shape to be cut on a manufactured board.
       
       Figure 5
       Outline the procedure of cutting out the rectangular shape. (7 marks)

ANSWERS

1.                            
   1. Definition of entrepreneurship
      Entrepreneurship - it is the art of identifying business opportunities and gathering necessary resources to initiate and start successful business enterprise
      Or
      It is the art or science of innovation and risk taking for profit in busi-
      ness.
      (Any of the two) 2 marks
   2. Institutions from which one can get capital to start a small wood work-
      shop.
      • Community based organizations.
      • Banks
      • Non-governmental
      • Government
      • Cooperative societies
        Any 4 x 1⁄2 = 2 marks
2. Difference between a marking gauge and a cutting gauge
   
   2 correct drawings x 2 = 4 marks
   4 marks
3. Advantages of studying woodwork.
   • It opens up opportunities for further studies.
   • It imparts skills in woodwork that enables one to be
   • self reliant/employed.
   • It equips one with knowledge /skills to create employment in the field of wood working
     Any 2x 1 = (2 marks)
4. Faults that occur as a result of incorrectly fixing butt hinges
   
5.                            
   1.            
      1. Rounding:
         Method of shaping/decorating edges and ends to a given radius. (ii) Curving:
         Method of cutting and removing of materials on wood along a line that is not straight.
   2. Hand tools used:
      1. Rounding-spoke share, surform tool, rasps, files
      2. Curving - chisels and mallet, spokeshave, rasps, surform tools.
6. Difference between end split and checks on timber board
   
7.                  
   1. Tools which can be used to make a groove for a housing joint.
      • Try square
      • Marking gauge
      • Chisel
      • Tenon saw
      • Mallet
      • Router plane
        Any 4 x 1⁄2 marks= 2 marks
   2. Features that differentiate a try plane from a smoothing plane
      • A try plane has a longer length than a smoothing plane.
      • A try plane has a wider blade than a smoothing plane.
        2 x 12 marks
8.                  
   1. Reasons that may cause a hand saw to get stuck in a kerf while in use:
      1. When the setting of the saw is lost.
      2. When the timber is green or wet.
      3. When the timber has sticky resins.
         2 x 1 = 2 marks
   2. Procedure of cutting the workpiece.
      1. Place the thumb on the line at the edge.
      2. Place a cross-cut saw at an angle.
      3. Draw the saw backwards to make a starting cut on the waste side.
      4. Complete the cutting at the full front thrust.(3 marks)
9.                        
   1. Reasons that may make a try square inaccurate:
      1. Incorrectly storing the try square (e.g placing heavy objects on it)
      2. Constantly dropping the try square square on the floo.
      3. Using the try square for the wrong purpose.
      4. Worn out stock or blade
      5. Loose screws
         Any 2x 1 marks = 2 marks
   2. Safety precautions to observe when using a circular saw.
      1. Push sticks should be used when cutting short pieces. 
      2. Set appropriate depth of cut.
      3. Working space to be free of obstructions.
      4. Riving knife must be firmly bolted behind the safety guard
      5. Use appropriate safety wear like goggles, ear plugs and gloves,
         Any 4 x 1⁄2 marks = 2 marks
10.                          
    
    Correct enlargement = 1
    Radials = 1
    Focal point F = 1
    Side length (33.5 mm) =1
    Total = (4 marks)
11.                          
    
    Correct interpretation = 1
    Centre lines 4 x 1⁄2 =2
    1st angle projection = 1 1⁄2 
    Scale = 1
    F.E.3 faces 3x 1⁄2 =1 1⁄2
    - 1 circle =1
    E.E 3 faces 3x 1⁄2 = 1 1⁄2
    - hidden detail = 1
    Plan-3 faces 3x 1⁄2 = v
    - hidden detail = 1
    Pencil work = 2
                     15 marks
12.                      
    1. Overlay: Is a method of decorating wood furniture by giving ornamental shapes made out of wood, metal or plastics on a wooden surface.1 mark
    2. Four tools used in overlaying:
       • Chisel
       • Mallet
       • Coping saw
       • Spoke shave
       • Surform tool Rasp fil
    3. Pictorial view of a table top decorated with an overlay.
       
    4. Types of screws.
       
13.                  
    1. Advantages of seasoning timber.
       • Easy to work with when using hand tools.
       • Light in weight.
       • Has better resistance to mould and fungi.
       • Receives finishes easily and produces quality finishe
       • Has less shrinkage.
    2. Timber seasoning defects.
       
    3. Two methods of sanding a wide board by hand are:
       1. Sanding along the grains.
          Sand the piece along the grain with uniform strokes. The strokes should be long and smoothly done.
       2. Sanding in circular motion.
          Keep the hand in a circular motion to produce a smooth surface. Do not rub roughly but control your hand slowly in a circular manner.
14.              
    1. Procedure of applying shellac polish on a table top..
       • Pour small amount of shellac into a container.
       • Add equal amount of thinner.
       • Dampen a rag with some thinner and wipe the surface to be fini hed.
       • Dip brush about one third in shellac and wipe the sides of the brush on the container.
       • Start at the center and brush toward the edges.
       • Use long and even strokes.
       • Allow the shellac to dry at least an hour (four to six hours is better).
       • Sand the surface with fine steel wool of No. 5/0 garnet pape.
       • Apply the other coats in that order.
    2.                    
       1. To illustrate the correct use of a hand brush when varnishing:
          
       2. Cleaning and storing the brush.
          • After use, the brush is washed in the turpentine, wiped out with a clean cloth, it is dried then it is suspended in turpentine to keep the bristles straight.
15.                    
    1. Dove tail saw
       
    2. Characteristics of a dovetail saw.
       • Length 150 mm to 200 mm.
       • Teeth as 18-22.
       • Comes with closed or open handle,
       • Used for cutting joints e.g dovetail joint, i.e shoulders and tenons of small tenon joints.
         Any 4 x 1 = (4 marks
    3. Procedure of cutting out the rectangular shape.
       • Mark the outline of the board
       • Drill two holes on the board. Holes drilled at corners.
       • Insert the compass saw in one hole and cut in two directions.
       • Insert in the second hole and repeat the process.
       • Finish the corners with a rectangular hand fil
         
         7 marks