Quote Originally Posted by John Lucas View Post
An example for the 3rd scenario is when using a straight bit and cutting dados. Here the chips have only one way to go, where the cut has just been made - out in front of the cut...to the left of the table.
I've seen some router tables where the insert has a hole cut in it such that the debris from dado/groove cuts travels a few inches and then gets sucked down through the insert. I suspect this would work better with the higher suction of a shopvac due to the small path for the air (which is only the size of the groove itself).