Using this saw blade sharpener is quite straightforward. First, make sure the power is off and the sharpener is on a stable surface. For TCT blades, use the diamond - coated grinding disc. For non - TCT blades, switch to the ceramic disc. Adjust the angle between 0 - 25° according to your blade's requirements to ensure an even sharpening. Then, turn on the sharpener and carefully guide the blade against the grinding disc. Remember to always wear safety goggles and gloves when operating. When not in use, keep it in a dry place. Periodically check the grinding discs for wear and replace them if they're too worn out. Also, make sure to clean the sharpener regularly to remove any debris that may affect its performance.