These fingers have “teeth” on them that if, for some reason, a board tries to come backwards from the saw, the fingers catch the board and prevent it from sliding backwards. The Delta 34-868 splitter also has built-in anti kick-back fingers. Needless to say, a splitter or a riving knife are essential safety mechanisms in a table saw. A splitter is fixed it doesn’t move with the blade. You can still do a kerf cut with the riving knife in place. A riving knife is like a splitter except it only sticks up to just below the top of the blade and moves up and down with the blade as you raise and lower the blade. Many table saws today have a riving knife. This would cause the board to also pinch against the blade and potentially cause the blade to catch on the board and send it flying.at you! Let’s say you didn’t have a splitter and were ripping a board that had tension in it and as you were cutting the board, it started to pinch itself back together, behind the blade, as you were cutting it.
On its own, a splitter sits behind the blade and helps prevent a board from drifting back into the blade, once it has been cut, which would cause serious kickback and potential injury.
Most table saws have a splitter built into the blade guard. First, a little bit about what a splitter is and is not.
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