The Technique of FURNITURE MAKING

Seasoned wood

The terms dry, bone dry, well seasoned are relatively meaningless without supporting evidence, for any wood which has been sticked one year for every inch (25 mm) of thickness may be counted as air dry or seasoned, as distinct from green. The moisture content will, of course, depend on the season of the year, and not on the number of years in stick; it should not exceed 20 or 22 per cent in exceptional circum­stances in Britain, unless it is water wet with drifting rain or snow. While further drying over the prescribed minimum will not make any difference to the moisture content, nevertheless additional years in stick help to equalize out the built-in strains and stresses; and while a 1 in (25 mm) board of English oak which has been seasoned for five years might show little intrinsic difference from one which has been dried for one year only, nevertheless it will be more mature and tend to be milder mannered and more stable.

Timber-merchants or lumber-dealers converting their own logs keep exact records, and will always give the number of years in stick, while if they have bought the logs from other merchants the pedigree is usually available. Retail merchants who do not convert their own can rarely give the seasoning time, marketing the wood as 'seasoned' only. This also applies to all square edge imported wood, which may only be 'shipping dry' (approximate­ly 25 per cent moisture content) when received

from the importer. However, reputable merchants can be trusted to advise the buyer to the best of their ability.

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The Technique of FURNITURE MAKING

ESTIMATING THE COST OF MAN-HOURS IN HANDWORK

Where no previous records are available the proprietor must assess his own capabilities and those of his employees. Common joinery items are usually in softwood of fairly large dimensions, with …

Costs of man-hours

The total cost of man-hours at the rates paid, plus overtime rates where applicable, plus health insurance, pensions, paid holidays, etc. have to be considered. Here again these may be …

Appendix: Costing and estimating

Costing is the pricing of completed work taking into account not only all the direct expenses— materials, wages and insurances, fuel and power, machining costs, workshop expenses, etc.—but also a …

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