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Showing results for tags 'Trestletree'.
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Lower Mast Crosstree and TrestleTree Snape
TomShipModel posted a topic in Masting, rigging and sails
Good Morning all, I'm currntly fabricating masts and spars for HMS Liverpool. First, as I've known from experience over and over, use the given dimensions rether than scaling from a drawing. The set of plans that I have for the masts and spars are shown on a drawing that was published in Shipwright years ago. While it is generally 1:96, the tops and crosstrees are not drawn to the same scalle as the masts. Hence, two crosstree/trestletrees go in the object lesson bin! Steel defines the following: "SNAPING, reducing the ends of any piece to a less substance." The crosstree has what is called a "snape" at each end. Basically, it is a tapering in the vertical plane with the taper of differnt length at either end of the cross tree. Lee's does describe these in detail as does Steel. I've seen many models with the longer taper on the fore side and the shorter on the after end of the cross tree. However, Steel says the following: "TRESTLE-TREES are sawed or hewed to their sizes thus. In length, they are one-fourth the length of the top-mast; in depth, half the given diameter of the mast; and in thickness, two-thirds of the depth. The insides are trimmed straight, and out of winding, and the thickness set off parallel thereto. The uppersides line straight and square, and the depth parallel. The undersides are snaped at each end, and the edges chamfered the length of the snape. One end to be once and a half the depth, the other end once the depth only, within the ends, and the snapes are lined to half the depth of the trestle-tree, and rounded to a sweep at the ends; the lower outer edge is chamfered along the whole length, and the inside only to the cross-trees. The longest snapes to be at the foremost ends of the main trestle-trees, and the after ends of the foremast trestle-trees." The instruction in the bold text is something that I've not seen before nor described anywhere else. It also doesn't state and instruction on the mizzen mast. This detail will not be visible to the casual observer of a model in 1:96. However, it is very curious. Have any of you run into this previously? Thanks,- 1 reply
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