waecE-LEARNING
Home
Technical
Mathematics
Languages
Science
Social Science
Art
Literature Arabic Islamic Studies C.R.K HistoryMusicVisual Art Clothing/Textile Home Management Shorthand
 
Woodwork Paper 3, Nov/Dec. 2009  
Questions: 1 2 3 4 Main
General Comments
Weakness/Remedies
Strength

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


Question 3

  1. Name and sketch two types of halving joint.
  2. (i)   Name two types of wood stain.

(ii)  State two reasons for staining wood.

  1. State three precautions that should be taken in nailing operations.


_____________________________________________________________________________________________________
Observation

Most candidates were able to name and sketch the types of halving joint correctly.  However, they failed to:

  • state the precautions that should be taken when nailing;
  • name types of wood stain;
  • state the reasons for staining wood.

      The expected response to question 3 is as given below:

      3(a)            Precautions that should be taken in nailing operations

-Select the proper nail for the job.
-For greatest holding power, always nail the thinner piece of wood to the thicker    
  piece
-Do not place nails in a straight line as this tends to split the wood.
-When nailing thin materials which split easily, holes to accommodate the nails 
  should be made with a bradawl.
- Hold the handle of the hammer close to the end.

             (b)       Halving joints

-Dovetail halving
-T- halving
-Cross halving.

            Sketch of Halving Joints

Dovetail halving  T-halving  Cross halving joint
           
(c) (i)   Types of wood stain

                        -           water stains
                        -           spirit stains
                        -           oil stains
                        -           chemical stains

            (ii)        Reasons for staining wood:
                        -           to obtain uniform colour
                        -           to change colour of timber to a desired colour
                        -           to colour a job to match or harmonize with existing colour
                        -           to improve the appearance of cheap wood.

Powered by Sidmach Technologies(Nigeria) Limited .
Copyright © 2012 The West African Examinations Council. All rights reserved.