<blockquote>You can completely remove the nonstick coating from cookware, leaving a smooth, clean surface. The look and usefulness of a worn out nonstick pot can be restored without damaging the surface below. Flecks of nonstick coating peel away from well used nonstick cookware, causing foods to release unevenly. These tiny pieces of plastic polymer often end up in the finished dish. Protect the people who eat at your house from unexpected bits of nonstick material in their food by cleaning it from your pan permanently.</blockquote>
via <a href="https://www.leaf.tv/articles/how-to-remove-nonstick-coating-from-cookware/">How to Remove Nonstick Coating From Cookware | LEAFtv</a>.