Types of Teeth
Fast cut teeth
This is a refinement of the Fleam tooth, in addition to the two ground edges on each tooth, a third angle is ground across the top of the tooth.
This takes away the hard to start problem mentioned earlier and allows the saw to outperform in three areas:
Double Ground Tooth
Triple Ground Tooth
Speed - Due to a very narrow kerf the the saw cuts very quickly
Direction - Fast cut teeth cut on both the push and pull stroke.
Grain - Fast cut teeth can be used both with and against the grain.