Radial - The grain of the timber is more than 45 degrees., Tangential - The grain of the timber is less than 45 degrees, Piling sticks - Used to seperate timber during seasoning., 75mm x 50mm - Is a standard size of P.A.R. timber., 80mm x 40mm - Is not a standard size of P.A.R. timber, Cupping. - A defect in timber caused during seasoning., Cup shake - A defect in timber caused naturally during growth., Dry rot. - Caused by the moisture content being to high., Wet rot. - Caused by over exposure to moisture/water., Tongue and Groove. - Is a joint used to widen timber., Halving joint. - Can be used to lengthen timber.,

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