Using Terrco PCD Pucks is a breeze. First, choose the right puck for your surface type. For grinding, firmly attach the puck to your grinding tool and start working in a slow, steady motion across the tough surface. When polishing, use a lighter pressure and a circular motion. Always wear safety goggles and gloves during operation. After use, clean the pucks with a soft brush and mild soap, then dry them thoroughly. Store them in a dry place away from moisture to maintain their performance. Avoid using them on surfaces that are too hard or brittle as it may damage the pucks. With proper care, these pucks will serve you well for a long time.