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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 of plywood is 1200 × 2400 mm. 5 × 5 feet (1,500 × 1,500 mm) is also a common ...
A continuous sheet of veneer coming out of a peeling rotary lathe. Veneer is obtained either by "peeling" the trunk of a tree or by slicing large rectangular blocks of wood known as flitches. The appearance of the grain and figure in wood comes from slicing through the growth rings of a tree and depends upon the angle at which the wood is ...
The finished product has properties similar to plywood, but is uniform and cheaper. [10] When tested to failure, OSB has a greater load-bearing capacity than milled wood panels. [ 11 ] It has replaced plywood in many environments, especially the North American structural panel market.
mitre. Also spelled miter. Any joint made by fastening together pieces with the ends cut at an angle. mitre box. Also spelled miter box. A box used for making mitre joints by having slots to guide a saw at the desired angle for the joint. mitre saw. Also spelled miter saw.
The earliest mitre clamps are a simple spring in a C-shape with sharpened points that are sprung onto the outside corner of the mitre joint. [citation needed]In a later design, right angled plates are higher than the screws and the holder.
For most portable plate joiners, a nominal 4-inch or 100 mm diameter blade is used for the Nos. 0, 10, 20 biscuit cuts. The blade is set deeper for joining the larger biscuits. Most blades have 4, 6, or 8 teeth and fit a 7 ⁄ 8-inch or 22 mm arbor. The thickness of the blade is typically 0.156 to 0.160 inch or nominally 4 mm.
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Mitre square: A mitre square is used in woodworking to mark and measure 45° angles and its supplementary angle, 135°. The most common type (pictured) has a tongue set at 45° to the stock. Factory-made mitre squares usually have a metal tongue and a wooden stock, though historically woodworkers would often make their own out of wood. [16]