NEVER USE A TABLE SAW WITHOUT THIS!! (Riving Knife / Riving Knives--Prevent Kickback/Blade Binding!)

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NEVER USE A TABLE SAW WITHOUT THIS!! (Riving Knife / Riving Knives--Prevent Kickback/Blade Binding!)

Table Saws have come a long way in the last 15 years--and no feature is more important or crucial to modern table saws than the RIVING KNIFE / RIVING KNIVES. This short video from The Honest Carpenter will show you how riving knives work--and why you should always use one!

A riving knife is a thin metal fin that sits directly behind a table saw blade, and is attached to the arbor assembly near the motor of the table saw.

Riving knives prevent KICKBACK on table saws.

Kickback is a phenomenon where pressure and stress in the wood grain of a board causes the wood to squeeze or bind the saw blade. This can cause the blade to hurl the wood back towards the operator, resulting in injury.

The riving knife prevents the wood or stock from binding up on the saw blade by acting as a sort of narrow wedge in the kerf of the board.

When the warped lumber squeezes shut, it clamps down on the riving knife instead of the blade.

The riving knife is slightly wider than the body of the saw blade, but slightly narrower than the teeth of most blades. So, it fits neatly in the saw blade's kerf, and lets the unwarped stock pass right by.

The predecessor to the riving knife was the SPLITTER. This was a less adaptable feature, because the splitter typically couldn't be adjusted on the table saw.

Riving Knives can be height adjusted to allow for blind cuts, like dadoes and grooves.

In 2009, Underwriter Laboratories mandated that all new models of table saw should include riving knives.

Along with blade guards and anti-kickback pawls, riving knives should always be used for table saw safety.

Thanks for watching!

The Honest Carpenter