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Increase of cutting speed will be one of the most easily applicable means to perform a high productive honing. In this report, the effects of increased speed in the honing of cast iron are made clear, and the devices to improve weak points in performance resulting from this condition are discussed. Experiment was carried out by a simple method which finished a bar surface with a single stick. The cutting speed was raised up to two or three times faster than usual speed by increase of rotary speed of workpiece. This trial brings high productive performance, that is, increase of metal removal rate and reduction of specific stick wear and operation time. However, it involves also aggravation of surface roughness and out of roundness, and runs counter to the expectation of improving finishing accuracy. Those changes in performance are concluded to be mainly caused by the crushing of cutting eges which is developed by the vibration, that occurs by shuttle motion of stick at the stroke end. Therefore, the crushing of cutting edges should be restrained in order to improve the finishing accuracy in high speed honing. So, for that purpose, the following some devices were discussed and their effectiveness were confirmed by experiment; reducing a cross-hatch angle, using a hard stick or a sulfur treated one which reinforces acting grits, and so on. (Wassmann)