You Can’t Beat the Physics of Kickback
A quick disclaimer: We’ve all heard about kickback ad-nauseam. Ditto tablesaw lawsuits, why you should use a riving knife, etc. And while the video posted below came out nearly two years ago, I recently re-watched it, and was floored by one very specific aspect.
More on Kickback
The video, produced by NewWoodworker.com, prompted a flurry of comments when it appeared on YouTube in February of 2012. It presents a woodworker intentionally creating kickback on his tablesaw in order to demonstrate just how dangerous the phenomenon is. We see a woodworker stand well to the side of the path of travel, using a push pad to slightly cant a piece of wood as it passes between the rip fence and blade, thus creating a pinch at the back of the blade and thus causing-you guessed it-kickback.
Here’s the Kicker
What floored me wasn’t the fact that the kickback occurred, or how violent it was but rather, the fact that despite the fact that this fellow knew the kickback was coming, and was prepared to pull his hand away at that fateful moment, the momentum of the blade was simply too much to fight against. In his slow motion replay at minute 4:20 we clearly see that despite his efforts to pull his hand away from the blade, it still gets sucked right towards it. By my estimate, his left hand was pulled in to within 1/2-in. of the spinning blade-again, this despite the fact that he was intentionally pulling his hand AWAY from the danger zone.
Just goes to show, you can’t beat physics, no matter how hard you try!