How to Make Your Rotary Cutter Last Longer Sharpen rotary cutter blade by folding tin foil several times and cutting it with Cutter. Test on fabric scraps until it is sharp.If you are interested in hobbies and are constantly dealing with handcrafts, the rotary cutter will be your greatest help. This apparatus will both prevent your injury and make your job easier. Of course, like every hand tool, this tool will not cut your fabrics and materials as you wish. Or you will have to pass this tool over the fabric at least twice to cut a fabric. This method of sharpening a rotary blade tool will probably not help you in the long term, but at least it will provide you with a long way not to throw your machine away. Let’s learn the details of this from our source page.