Method for chamfering rare earth alloy

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PROBLEM TO BE SOLVED : To provide a chamfering method for rare earth alloy using a media such as a barrel polishing method, capable of preventing the production of a broken, and the contact of works to each other during polishing, and executing the uniform chamfering. SOLUTION : The rare earth alloy work 70, a ball media 80, the liquid medium, and spacer particles of 0.1-10 vol.% to the liquid medium are charged into a vessel 12, and the vessel 12 is vibrated to polish the rare earth alloy work 70.