Circular saw blade are made from all kinds of textile and have different types of tooth and steel . Each combination of material and style yields a blade that is idealistic for a sealed purpose . For instance , steel round proverb blade are great for fade through deal , but they fatigue our quickly if you assay to cut hardwood with them . And the more tooth on the blade , the easier it ’ll slit through sure materials . To cut plyboard , you ’re better off with 100 or more teeth , but to cut across the grain of unconstipated woodwind instrument , you could make a smooth slash go out with just 48 teeth [ seed : Lowe ’s ] . Plus , your saw may be better for sure tasks depending on where the handle , motor and blade are in coitus to each other .

To veer through concrete , you call for a circular power saw blade with ball field tips or some other kind of scratchy blade . As with any replacement leaf blade , when you attach an abrasive blade to your saw , you have to check that that it ’s the right diameter for your cock . A dirt ball - drive flair saw where the motor and sword line up and the handle is toward the back is belike good for a big job like cutting concrete . You also require to ensure your saw is stiff enough . The amp rating on a saw tells you how much mightiness the byword uses , but not how much it knuckle under . Oddly enough , the price of a adage may be the best indication of its character and strength [ source : Dekorne ] .

When using a circular saw to dilute through concrete , safety should be your first concern . Like in any dangerous task , protective gear for your eyes and ears is a must . ensure you ’re using the right eccentric of sword for the labor , and only use an abrasive blade if your byword has an aluminum or Mg guard on it .