Reply by bunkie

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Posted on Tablesaw Blade 101

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412 posts in 3170 days

#1 posted 12-25-2009 03:36 PM

In a table saw, the hook angle and blade height affect tearout on the bottom side of the workpiece. The angle at which the tooth exits the wood makes for either a chopping cut (more likely to tear out with a larger angle) or a shearing cut (less likely to tear out with a shallower angle). Negative hook angles make for shallower angles and less tearout. This is why the better dado blades (such as the Forrest) have highly negative (10 degrees or so) hook angles because a cross-cut dado is perfect storm with respect to tearout.

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