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Selection of steel for best sharpness and hardness

Joined
Mar 26, 2021
Messages
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I am doing a design project to make a shuriken with a thickness of 3mm, What the best steel for sharpness and hardness. What is the best way to make it hard? Cold forming, heat treatment...Etc. Would surface treatment, electroplating affects sharpness? Just a student, not a knife expert, any advice is appreciated.
 
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