WoodWork 2, WASSCE (PC 2ND), 2019

SECTION A

 

Question 4


 

Observation

 

 

Question 4a required students to list four types of timber defects that occur during air seasoning.
The expected response is;

 

  • bowing;
  • springing;
  • twisting;
  • cupping;
  • end shakes/ surface shakes /surface splits;
  • end splits.
  • checks.


 

Question 4b required candidates to list two types of synthetic resin adhesives. The expected response is:

  • epoxy resin;
  • polyvinyl acetate;
  • acetal resin.
  • urea-formaldehyde;
  • melamine formaldehyde;
  • phenol formaldehyde;
  • resorcinol formaldehyde;
  • contact adhesives;
  • polyurethane glues;
  • cyano-acrylic glues.
 

Question 4c required students to state two uses of veneers. The expected response is:

  • manufacture of plywood;
  • lipping of edges;
  • wood bending;
  • parquetry;
  • marquetry;
  • veneer matching.

 

Comments on Question 4

Many candidates listed general defects in timber instead of seasoning defects.