A rip saw is specially designed for making rip cuts. The cutting edge of each tooth has a flat front edge and it is not angled forward or backward. This design allows each tooth to act like a chisel (rather than being knife-like, as with a crosscut saw), preventing the saw from following grain lines, which could curve the path of the saw. By acting like a chisel, the saw can more easily cut across deviating grain lines, which is necessary if a straight cut is to be achieved. A rip saw won't give you a perfectly clean cut, but it will get you through your material, and get you ready to move onto the next, more fine steps.