smoother cuts for finish applications. The type of material is also a factor; for cutting PVC product a carbide-toothed blade with 80 teeth or more will prevent chipping. A blade designed specifically for the application can increase the accuracy of your trim cuts, which helps when mating the joints. A rough cut might require you to sand the cut smooth, but the act of sanding can alter the shape of the cut, so it may no longer fit perfectly during assembly. Spare yourself the frustration on trim projects and use fine- toothed blade intended for trim.