Like I understand the concept of kickback but why cant we reverse the direction of the teeth so it kicks forward and binds the blade.
In: Engineering
Kickback is generally not an issue with the direction of the teeth, in most cases it’s the parts of the timber and/or dust (or whatever you’re cutting) either side of the blade closing against the sides of the blade causing compression and therefore more friction.
The danger depends on the type of saw you’re using. In the case of a portable circular saw, the cutting part of the blade is moving forward, away from you. So when the blade stops due to additional friction, the saw will attempt to spin in the opposite direction. If you’re not braced for it, this causes the saw to kick back towards you, and if you’re still holding the trigger the blade starts spinning as soon as it’s free and you get cut. Keep in mind this all happens in a fraction of a second.
Table saws will generally just spit whatever you’re cutting back at you with extreme force..
The direction of the teeth is also necessary for clearing the cut of waste.
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