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>Studies on Quantification of Sensuous Sharpness and Mechanical Sharpness of Wood Cutting Tools. IX. Effects of Sharpness of Knife Cutting-Edge and Adjustment of Plane on Chip Deformation and Surface Quality of Workpiece in Oblique Cutting of Wood against Grain with Various Japanese Hand Planes
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Studies on Quantification of Sensuous Sharpness and Mechanical Sharpness of Wood Cutting Tools. IX. Effects of Sharpness of Knife Cutting-Edge and Adjustment of Plane on Chip Deformation and Surface Quality of Workpiece in Oblique Cutting of Wood against Grain with Various Japanese Hand Planes
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 woodwoking tools in the last one haundred 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 woodworker. In this study, in order to make clear the effect of the inclination angle of the knife 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 planing of wood against the diagonal grain and with the interlocked grain, and characteristics and sharpness of various planes used in this study are discussed.
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