Most candidates were able to:
- define veneer;
- list methods of producing veneer;
- define seasoning and state methods of converting timber.
The expected answer to question 3 is as given below:
(a) (i) What Veneer is
A veneer is a thin sheet of wood cut or sliced from a log. It may be glued to the surface of other woods for decorative purposes. Three or more layers of the veneer could be glued together at right angles to each other to make plywood.
- Methods of Producing Veneers
- Rotary cutting
- Saw cutting/sawing
- Sketch to show one method of producing veneers
(b) Methods of applying preservative
- Pressure Impregnation
(c) (i) What Seasoning is
This is a process of drying timber to remove excess moisture either in the open air or in a kiln to a desired moisture content.
(ii) Methods of Converting timber
- Through and through or slash sawing
- Tangential sawing
- Quarter or rift sawing
- Boxing the heart sawing.
(iii) Defects associated with timber conversion
- waney edge
- cross grain
- diagonal grain
- uneven thickness