What Causes Table Saw Kickback and How to Prevent It
Kickback happens in a fraction of a second. It occurs when the workpiece binds between the spinning blade and the fence, causing the wood to be thrown back at the operator with incredible force.
The Physics of Kickback
When wood pinches the back of the blade (the ascending teeth), the teeth bite into the wood and lift it off the table. Once it clears the table, the rotational force of the blade launches it backward.
How to Prevent It
- Always use a riving knife or splitter: This piece of metal sits directly behind the blade and prevents the wood from pinching together after the cut.
- Ensure your fence is parallel: A fence that toes inward toward the back of the blade is a recipe for disaster.
- Never freehand a cut: Always use the rip fence for ripping and the miter gauge for crosscutting. Never use both at the same time.
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