What does "negative hook" refer to on a saw blade?
Draw an imaginary line from the center of a blade out towards its teeth. The teeth of a negative-hook blade lean back from the line, while the teeth of a positive-hook blade lean into the line. More precisely, this lean is called the blade's pitch, or hook angle.
Blades with positive hook angles cut aggressively. Their forward-leaning teeth produce fast feed rates with minimal effort. Rip blades have the highest hook angles, while general-purpose and combination blades have somewhat lower hook angles. Blades with low or negative hook angles produce a slower feed rate that requires more effort, but cut quality improves. Crosscut blades have low to negative hook angles.
Your miter saw blade should have teeth with a low or negative hook angle in order to make a clean, safe cut. On a miter saw, the blade enters the wood from above. Teeth with a positive hook tend to lift the workpiece. On a sliding miter or radial arm saw, a blade with an aggressive hook angle can grab the wood and pull itself through—a real safety hazard.
negative hook miter saw blade
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