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:''This article focuses on one aspect of toss juggling. For a more general discussion of juggling, see the main article: Juggling'' Knife juggling is a variant of toss juggling using special knives as props which are thrown and caught. Although knives are sometimes juggled recreationally, it is generally a performance art. Knife juggling is typically seen performed by street entertainers as part of a (routine ) or at art or historical festivals. The knives are thrown with vertical spin, lending them stability in the air, and are typically allowed to rotate once or twice before being caught. Knife juggling can, of course, be performed with any number of objects, but the vast majority of performers use three knives. Patterns used are usually basic and consist solely of a cascade, and sometimes involve simple juggling tricks such as an under the leg throw. This is due the unwieldy nature and increased weight of knives and the increased level of danger when compared to such props as juggling clubs. Videos below of The World Juggling Federation http://thewjf.com/videos/ ==Dangerous Props== Juggling is rarely performed with sharp knives, because there is little point in increasing the risk to performer for no aesthetic benefit. Specially balanced juggling knives are used, usually with a bevelled edge to appear sharp. Performing with genuine machetes is not generally advised because the spin and balance are unfavourable, and tricks beyond the basics become much more difficult. Various bladed implements ''can'' be juggled, but many have a dangerous and unpredictable spin as seen on an axe or chainsaw. Such items are generally avoided, although chainsaws provide a preferable spin to axes if needs must. Juggling knives are constructed with a blade of steel or sheet aluminium several millimeters thick and a wooden or composite handle such as found on juggling clubs. The blades are often scimitar shaped with a bevelled 'cutting' edge, and the other edges are rolled to prevent injury. The other common blade shape is an elongated diamond with all edges and the point rolled or otherwise made safe. While this makes knife juggling much safer than popularly assumed, knives can still cause severe trauma injuries to the head and body when falling from a height. Because of this, the juggling of large lumps of metal should only be attempted by competent club jugglers who understand the risks. Juggling knives are available from many circus/juggling equipment manufacturers such as Dubé,〔http://www.dube.com/knife/〕 Beard, Mister Babache,〔http://www.jonglerie.com/index.php/knives.html〕 Oddballs,〔http://www.oddballs.co.uk/juggling-knives-c-1201.html〕 with prices starting at around 15GBP per knife. 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「Knife juggling」の詳細全文を読む スポンサード リンク
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