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.