JSS2 Third Term Basic Technology Lesson Note – Wood: Verner and Timber Treatment

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 TOPIC: WOOD (CONTD.)

Sub-Topic:

• Veneers
• Types of Manufactured boards – plywood, chip board, block board, etc.
• Timber treatment and timber preservation methods.
• Importance of timber treatment.

 Sub-Topic 1  Veneers

Veneers : A veneer is a thin layer of sliced sheet obtained from wood. The thickness of the veneers ranges from 0.5mm – 3.0mm

Method of making veneers

1. Rotary method
2. Slicing method
3. Eccentric method
4. Rotary Method. The rotary method requires the wood to be steamed in other to loosen the fiber and make it easy to peel with knives attached to the lathe machine. With the lathe machine, large sheets of veneers can be produced and cut to marked sizes for commercial purposes.
5. Slicing Method. The timber is safely attached to the slicing machine. The knife or the cutting blade on the machine will be set on the wood depending on the thickness of the veneer required. The thickness is set after every stroke. On switching on the machine, it slices the sheet of wood to the required thickness depending on the purpose of the veneer.

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