<P> The rate of loss of moisture can be controlled by coating the planks with any substance that is relatively impermeable to moisture; ordinary mineral oil is usually quite effective . Coating the ends of logs with oil or thick paint improves their quality upon drying . Wrapping planks or logs in materials which will allow some movement of moisture, generally works very well provided the wood is first treated against fungal infection by coating in petrol / gasoline or oil . Mineral oil will generally not soak in more than 1--2 mm below the surface and is easily removed by planing when the timber is suitably dry . </P> <Ul> <Li> Benefits: It can be less expensive to use this drying method (there are still costs associated with storing the wood, and with the slower process of getting the wood to market), and air drying often produces a higher quality, more easily workable wood than with kiln drying . </Li> <Li> Drawbacks: Depending on the climate, it takes several months to a number of years to air - dry the wood . </Li> </Ul> <Li> Benefits: It can be less expensive to use this drying method (there are still costs associated with storing the wood, and with the slower process of getting the wood to market), and air drying often produces a higher quality, more easily workable wood than with kiln drying . </Li> <Li> Drawbacks: Depending on the climate, it takes several months to a number of years to air - dry the wood . </Li>

Difference between natural and artificial seasoning of timber