Firefighters employed a diamond-tipped blade on a handheld rotary tool to carefully cut through the ring. To protect the patient's finger, they used modified silverware as a shield and applied ...

Only the wide blade does the cutting, so only this has to be sharpened. Diamond stones can be used ... rub along the curve, out to the tip. Work slowly. You don't need a lot of pressure.

To sharpen a serrated blade, you will need a diamond or ceramic knife sharpening rod, preferably a tapered rod so you can use it for different sized serrations. If you don’t have one, or can’t find ...