waecE-LEARNING
Carpentry and Joinery 2, May/June 2014  
Questions: 1 2 3 4 5 6 7 8   Main
General Comments
Weakness/Remedies
Strength













































Question 7

  1. What is an adhesive?

 

  1. List three types of adhesives used in furniture making
  1. Explain the following terms associated with adhesives:
  2. pot life;
  3. assembly time;
  4. setting time.

 

 

 

_____________________________________________________________________________________________________
Observation

 

Most candidates were able to:

-           define adhesive correctly;
-           explain the given terms associated with adhesives.

However, they were unable to list the types of adhesives used in furniture making.

The expected response to question 7 is as given below:

  1. Adhesive: is a substance used to bond two surfaces.

 

  1. Types of Adhesive:

-           animal adhesive;
-           protein adhesive;
-           resin adhesive;
-           casein adhesive;
-           contact adhesive;
-           polyvinyl acetate;
-           urea formaldehyde.

  1. (i)         Pot life: is the length of time the glue remains useable after

mixing.
                                    (ii)        Assembly time: (open and closed)
-           Open assembly is the time allowed between applying the glue and fixing of the members of the job together.
-           Closed assembly is the period during which adjustment
            are possible e.g. squaring and aligning members.

                                    (iii)       Setting time: is the time it takes the glue to reach maximum
strength after being applied to the job.

 

           

Powered by Sidmach Technologies(Nigeria) Limited .
Copyright © 2015 The West African Examinations Council. All rights reserved.