To use the MIFFY 6-In-1 Cutting Pieces Diamond Composite Multifunctional Saw Blade, first ensure that your cutting tool is compatible with the 100mm blade. Begin by securely attaching the blade to your saw, following the manufacturer's instructions for safety. Once the blade is in place, select the material you wish to cut, whether it be ceramic tile, PVC, or metal. Adjust the speed settings on your saw according to the material's density. For ceramic tiles, a slower speed is recommended to prevent chipping, while PVC and metal can be cut at higher speeds. Always wear appropriate safety gear, including goggles and gloves, to protect yourself from debris. Start the saw and gently guide the blade along the marked cutting line, applying consistent pressure without forcing the blade. After completing the cut, turn off the saw and allow the blade to cool before handling. Regularly check the blade for wear and replace it as necessary to maintain optimal cutting performance.