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2. Plywood - Wikipedia

   en.wikipedia.org/wiki/Plywood

   The most commonly used thickness range is from 1 ⁄ 8 to 3 inches (3.2–76.2 mm). The sizes of the most commonly used plywood sheets are 4 by 8 feet (1,220 mm × 2,440 mm) [20] which was first used by the Portland Manufacturing Company, who developed modern veneer core plywood for the 1905 Portland World Fair. A common metric size for a sheet ...

3. Sandpaper - Wikipedia

   en.wikipedia.org/wiki/Sandpaper

   Sandpaper comes in a number of different shapes and sizes: Sheet: usually 9 by 11 inches (23 by 28 cm), but other sizes may be available; Belt: usually cloth backed, comes in different sizes to fit different belt sanders. Disk: made to fit different models of disc and random orbit sanders. May be perforated for some models of sanders.

4. Wood drying - Wikipedia

   en.wikipedia.org/wiki/Wood_drying

   Furthermore, free water may contain chemicals, altering the drying characteristics of wood. Bound or hygroscopic water Bound water is bound to the wood via hydrogen bonds. The attraction of wood for water arises from the presence of free hydroxyl (OH) groups in the cellulose, hemicelluloses and lignin molecules in the cell wall. The hydroxyl ...

5. Dimensional analysis - Wikipedia

   en.wikipedia.org/wiki/Dimensional_analysis

   Many parameters and measurements in the physical sciences and engineering are expressed as a concrete number—a numerical quantity and a corresponding dimensional unit. Often a quantity is expressed in terms of several other quantities; for example, speed is a combination of length and time, e.g. 60 kilometres per hour or 1.4 kilometres per ...