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A flitch beam (or flitched beam) is a compound beam used in the construction of houses, decks, and other primarily wood-frame structures. Typically, the flitch beam is made up of a vertical steel plate sandwiched between two wood beams, the three layers being held together with bolts. In that common form it is sometimes referenced as a steel ...
In the era of commercial wrought iron, blooms were slag-riddled iron castings poured in a bloomery before being worked into wrought iron. In the era of commercial steel, blooms are intermediate-stage pieces of steel produced by a first pass of rolling (in a blooming mill) that works the ingots down to a smaller cross-sectional area, but still greater than 36 in 2 (230 cm 2). [1]
Any wood grain with very fine fibers of cells that are not visibly porous. compass saw conversion The reduction of a whole log into pieces suitable for working. Conversion can be done in three basic ways: sawn, hewn, or split. coping saw crook Longitudinal bending to one side, caused by uneven seasoning or grain. See wood warping. crotch
Rift sawing is a woodworking process that aims to produce lumber that is less vulnerable to distortion than flat-sawn lumber. Rift-sawing may be done strictly along a log's radials—perpendicular to the annular growth ring orientation or wood grain —or as part of the quarter sawing process.
Three-section staff. The three-section staff, three-part staff, triple staff, originally sanjiegun (Chinese: 三節棍; pinyin: sānjiégùn; Jyutping: saam1 zit3 gwan3) or sansetsukon (Japanese: さんせつこん), three-section whip, originally sanjiebian (Chinese: 三節鞭; pinyin: sānjiébiān; Jyutping: saam1 zit3 bin1), is a Chinese flail weapon that consists of three wooden or metal ...
Rip cuts are commonly made with a table saw, but other types of power saws can also be used, including a radial arm saw, band saw, and hand held circular saw.In sawmills the head saw is the first rip-saw a log goes through, which is sometimes a gang-saw, and then the cants may be resawn using other saws and then edged in an edger and sometimes cut to length by a crosscut saw.
A metal mold, or former, placed on the back of the wood while heat bending can help ensure that all the bends and curves are done to the requirements of the project being made. Steel or iron are usually avoided, as iron can react with moist timber to produce rust staining, or some tannin-rich woods such as oak or chestnut will provide indelible ...
The Midcontinent Rift System (MRS) or Keweenawan Rift is a 2,000 km (1,200 mi) long geological rift in the center of the North American continent and south-central part of the North American plate. It formed when the continent's core, the North American craton , began to split apart during the Mesoproterozoic era of the Precambrian , about 1.1 ...