Sharp edge wear
Mechanical work of wood - General machining rules

For a long time, this degradation was considered to be caused solely by abrasion due to the friction of wood, which behaves rather like a grinding wheel. Today, we know that this mechanical wear is not the only cause; it may even be weakened by other forms of wear, such as electrical or chemical.

When the tooth penetrates the machined material, friction is considerable. This causes a temperature rise at the tip of the tooth that can reach...