How to Maintain and Sharpen Spiral Meat Grinder Knives Keeping your spiral meat grinder blades sharp is important. Sharp blades help you cut meat faster and easier. You do not need to use as much force. This means you will not get tired as quickly. You will also feel less pain in your hands and arms. Experts say sharp blades lower grip force and cutting time. This helps you avoid getting hurt. People who use dull knives have to work harder. They also have a bigger chance of hurting their muscles and joints. Horus, a company in China, sells good grinder parts. These parts help you stay safe and work better.