Blade material
Blades are usually made of stainless steel, which is much less prone to rusting than normal steel.
Ceramic cutters are available; they are corrosion-free and stay sharper longer because of a higher resitance to wear than metal blades. They remain cool to the touch even with prolonged use[citation needed], as they conduct less heat than metal blades. However, ceramic blades are brittle and easily broken, and more expensive to replace than metal blades.
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