"The teeth of our Flush Trim Saw do not have a set, so the blade can lay flat to trim plugs and pins without damage to the surface of your work. The blade has 20 teeth per inch and is mounted in a rosewood handle. This saw cuts on the push stroke. The blade length is 6" and overall length is 11" "
Jeff, as described the saw is only set on one side of the body of the saw. Therefore, when positioned correctly the teeth will cut in front and above only and leave the adjoining material unmarked, as opposed to the teeth cutting on each side. Personally I use the Veritas single bladed saw although I may upgrade to the double edged version as once in a while I have to use mine with my not so dominant left hand.
Noel, who gets easily confused.....