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Bending Wood

机译:弯曲木

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Questions often arise concerning the best way to achieve a i curve in a frame,deckbeam,or knee.Can it be cut from straight-grained wood,or should it be steamed,laminated,or gotten out of a crook? Unfortunately,there is no single answer to these questions,because much depends on the design of the piece,available materials,the equipment at hand,and the time required to accomplish the desired result. Knees Take,for instance,a quarter knee for an open boat.It can be cut from straight-grained stock if it has a simple shape and has only a shallow radius cut into it.The cross-grain at each end can be bound together by the fastenings holding the knee in place.However,in a more delicate knee cut from straight-grain,especially one having unusually long arms (with short,cross-grain fibers at one end or both ends) or one that rivets to an inwale,would be unacceptable (see drawings 1 and 2).In this case,a steam-bent or laminated knee would be more appropriate.A natural crook can always be used if it is of a hard,rot-resistant,well-seasoned wood.If you have planned ahead and have crooks on hand,by all means use them.
机译:关于在框架,甲板横梁或膝盖上获得i形曲线的最佳方法的问题经常出现。它可以用直纹木料切割而成,还是应该蒸,层压或弄弯呢?不幸的是,对这些问题没有一个单一的答案,因为这在很大程度上取决于零件的设计,可用的材料,手头的设备以及达到期望结果所需的时间。膝盖例如,四分之一的膝盖用于敞开的小船。如果形状简单,并且切入的半径较小,则可以从直纹木料上切下。两端的横纹可以绑在一起但是,用直纹谷物剪出的更细腻的膝盖,尤其是一只手臂异常长的手臂(一端或两端都有短而交叉的纤维),或者一个铆钉成针状的,这将是不可接受的(请参见图1和2)。在这种情况下,用蒸汽弯曲的或叠层的膝盖会更合适。如果弯曲的木材坚硬,耐腐烂且质地良好,则总是可以使用天然弯曲。如果您已预先计划并且手边有弯曲,则一定要使用它们。

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