metal cut off wheel provide good chip removal

metal cut off wheel, those for cutting with the wood grain (along the length of a board), have fewer teeth (16 to 40). The metal flap disc are designed to cut aggressively and deep gullets provide good chip removal. Crosscut blades, those for cutting across the wood grain (across the face of a board), have between 40 and 80 teeth designed for clean cuts. Smaller gullets separate the teeth. Combination blades can make rip cuts and crosscuts. They have multiple groupings of teeth separated by deep gullets. Each group has one tooth for ripping and four for crosscutting.