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Control over Heat Treatment in Knife Making
The test of bending a knife in a vice to 90 degrees and back to 20 degrees demonstrates the need for good control over heat treatment in knife making. The goal is to ensure knives are durable and can withstand different types of use without chipping or bending too much. Different types of knives may require varying levels of hardness in the steel based on their intended use, such as a chef's knife versus a camp knife, highlighting the importance of tailoring heat treatment to the specific knife's purpose.