The colour of a timber, which is important from a practical point of view, because it may enhance or detract from the decorative value of timber, is caused largely by infiltrates in the cell wall. These may be affected by light, air, or heat causing the colour of the timber to change over a period of time. They may also interact with other materials, as for instance when oak reacts with iron a marked colour change may be induced. The infiltrates and cell contents of some timbers may, during planing, sawing, sanding and so forth, cause irritation of mucous membranes or dermatitis which may in some cases be severe. Mansonia, makore and teak are particular examples of timbers that may elicit a more severe adverse reaction. In other cases a distinctive odour or taste may render a timber particularly suitable or particularly unsuitable for a given application.

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Wood Working for Amateur Craftsman

Wood Working for Amateur Craftsman

THIS book is one of the series of Handbooks on industrial subjects being published by the Popular Mechanics Company. Like Popular Mechanics Magazine, and like the other books in this series, it is written so you can understand it. The purpose of Popular Mechanics Handbooks is to supply a growing demand for high-class, up-to-date and accurate text-books, suitable for home study as well as for class use, on all mechanical subjects. The textand illustrations, in each instance, have been prepared expressly for this series by well known experts, and revised by the editor of Popular Mechanics.

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