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By Edward C. Peck, U.S. Forest Service

Wooden bending is an historical craft that's of key value in lots of industries this present day, specifically in those who manufacture furnishings, boats and ships, agricultural implements, instrument handles, and wearing items. Of the various equipment wide-spread to supply curved components of wooden, bending is the main competitively priced of fabric, the most efficient of individuals of excessive power, and maybe the most cost effective. lengthy adventure has advanced sensible bending suggestions and expert craftsmen to use them. but advertisement operations frequently maintain severe losses as a result of breakage through the bending operation or the solving procedure that follows. there's a longfelt desire for extra trustworthy wisdom approximately: (1) standards for choice of bending inventory; (2) larger equipment of seasoning and plasticizing wooden for bending; (3) extra effective machines for the bending operation; (4) options for drying and solving the bent half to the specified form; and (5) the impression of bending at the power houses of wooden.

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15 inch, which may have been due to shear strain. —Distribution of compressive strain in a bent stick. The mean measurements for 11 sticks are shown. U. S. GOVERNMENT PRINTING OFFICE: 1957-429172 For sale by the Superintendent of Documents, U. S. Government Printing Office Washington 25, D. C.

Spiking a minor strap to the outer face of a piece that is to be bent to form a boat rib. BENDING SOLID WOOD TO FORM 29 lesser degree in the drying of bent stock. The surface of wood seasoned to a moisture content of 15 to 20 percent is generally set in compression. In such a state, the wood is able to withstand exposure to severe drying conditions without developing fresh checks. The steaming or boiling treatment given wood before it is bent may, however, relieve this surface set and enable the surface to go into tension in the lateral direction when the bent piece is dried.

The clamp may have increased the friction between the stick, the form, and the strap in the central portion. The increased friction may have prevented the central portion from assuming the full amount of compressive strain. The compressive strain was not restricted to the curved portion of the stick but extended for about 1½ inches along each straight leg. 14 inches. 97 inches. 979 inch. 14 inches. 15 inch, which may have been due to shear strain. —Distribution of compressive strain in a bent stick.

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