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>Studies on Quantification of Sensuous Sharpness and Mechanical Sharpness of Wood Cutting Tools. XIII.Effects of Horizontal Opening of Mouth and Amount of Bottom-Surface Gap on Sharpness of Japanese Hand Plane with a Cap lron in Orthogonal Planing of Wood Parallel to the Grain
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Studies on Quantification of Sensuous Sharpness and Mechanical Sharpness of Wood Cutting Tools. XIII.Effects of Horizontal Opening of Mouth and Amount of Bottom-Surface Gap on Sharpness of Japanese Hand Plane with a Cap lron in Orthogonal Planing of Wood Parallel to the Grain
Japanese hand plane is one of the basic tools used by junior high school students for woodworking. The invention of the Japanese hand plane with a cap iron was the most important advance in the history of woodworking tools in the last one hundred years. It has seemingly a very simple mechanism, but it demands a lot of skill to adjust the each part of the plane. Therefore, it is one of the difficult tools for a general amateur, a junior high school student, a junior high school teacher, and an unskilled woodworkerl. In this study, in order to make clear the effect of the horizontal opening of mouth and the amount of bottom surface on the sharpness of the plane, and in order to find the optimum condition for planing, the planing tests with various Japanese hand planes were performed. Chip deformation and surface quality were observed and estimated in orthogonal planing of wood with the interlocked grain, and characteristics and sharpness of various planes used in this study are discussed.
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