A year ago, we were making laminated copper laps. We were using 1/8″ copper. The problem with this was that people would see Printed Circuit Board film versions at very low prices, and did not distinguish the difference. We have made solid copper laps in the past, sometimes as specialties, and there is always a low-level demand for them. Copper has been used for many years (Centuries?), for polishing the harder stones, for prepolishing with 3K, or for cutting, depending on what they have been charged with. Recent requests from stocking dealers have convinced us to stock them again. Copper is a good old reliable standard. Properly cared for, they can last a lifetime.