When cutting with a hand tool, you don’t find users relying on a gauge to check RPM speeds. But operating at the proper RPM for your application ensures the best cutting results and the longest blade life.
It comes down to achieving the proper chip load for both the application you are cutting and the tool you are using. The diameter of the holesaw and the RPM of the tool work in tandem to optimize the chip load for a blade.
Most hand tools are designed with two set speeds. Clutch speed one is slower, while clutch speed 2 is faster. When cutting harder materials like stainless steel, carbon steel, or fiberglass, you’re going to want to use clutch speed 1. If you use too high of an RPM on harder materials, this causes heat, which can break down the saw teeth or cause the material to work harden.
When cutting softer applications like particleboard or lumber, use clutch speed 2. Generally, the softer the material, the faster the RPM you can use. For more information, watch here!