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A jigsaw is a tool used for cutting arbitrary curves, such as stenciled designs or other custom shapes, into a piece of wood, metal, or other material. It can be used in a more artistic fashion than other saws, which typically cut in straight lines only. In this way, it is similar to the rasp and the chisel. Although a jigsaw can be used to cut arbitrary patterns, making a straight cut is more difficult. Modern jigsaws are power tools, made up of an electric motor and a reciprocating saw blade. See jigsaw (power tool). In the past, what are now usually called scroll saws were often referred to as jigsaws. ==History== Jigsaws first emerged in the 19th century.〔(Online Etymological Dictionary )〕 Early jigsaws used a treadle mechanism to move the blade. In 1947, Scintilla AG (later acquired by Bosch) started producing electrically powered jigsaws.〔(Bosch Media Service )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Jigsaw (tool)」の詳細全文を読む スポンサード リンク
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