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REVISION CARDS - TREES TO MANUFACTURED PRODUCTS
V. Ryan © 2014
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The first stage of converting natural wood to a product, is felling trees. Examples of natural woods are:
Pine, mahogany, oak and many more.
TRANSPORT TO SAWMILL
After a short time stored in the forest, to allow ‘free water’ to evaporate, the felled trees are transported to a sawmill, for initial processing.
/ ROUGH SAWING IN THE SAWMILL
In the sawmill, the logs are rough sawn into boards, a process called conversion.
At this early stage, the boards contain too much water and they are allowed to dry out for several months, in seasoning sheds. A quicker way is to dry the wood in kilns
RESAWING TO ACCURATE SIZES
Once the natural wood is seasoned, it is ready for machining and manufacturing, into products such as furniture. A circular saw may be used to cut the lengths and sections to accurate sizes. The wood is then planed to produce a smooth and accurate finish.
NATURAL WOOD PRODUCTS
|1. Describe the main stages of ‘processing’ a tree into a product. 5 marks|
|2. What is seasoning of natural wood and why is it necessary? 2 marks|
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