What kind of improper practice most significantly reduces hacksaw blade life during cutting operations?
Applying excessive cutting pressure beyond recommended limits
A hacksaw blade cuts well only within its designed load; forcing it does the most damage.
Applying excessive cutting pressure beyond the recommended limit overloads the teeth, causing them to strip or break and overheating the blade, which sharply shortens its life.
Wrong TPI, uneven stroke speed and poor tension harm cut quality and can break a blade, but sustained over-pressure is the practice that most significantly reduces blade life.
Hence, applying excessive cutting pressure most reduces blade life.
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