Toolbox: Circular Saw Blades

Help Around the House : Episode ARH-235 -- More Projects »
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Figure A
The type of blade you need for your circular saw depends on what kind of materials you need to cut and how much use the saw gets. The standard issue steel blade that's packed with many new saws ( figure A) is all right for getting started, but will wear out in only a few cuts.
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Figure B
A carbide-tipped blade with a low-friction coating (figure B) will cut through many materials very easily. The carbide-tipped blade will also last about 50 times as long as a standard steel blade. However, immediately replace the blade once you notice any missing carbide tips.
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Figure C
A fine-toothed blade (figure C) is good for jobs where you need a smooth edge, such as when cutting laminates or plywood. The general rule of thumb is the more teeth on the blade, the smoother the cut.