Step 3 · Deburr and Clean Pipe Ends
A clean, smooth pipe end is critical for a leak-proof connection. Take your deburring tool and insert it into the freshly cut pipe end, rotating it to remove any interior burrs or sharp edges. Then, use the outside part of the tool to smooth the exterior edge. Afterward, use a piece of emery cloth or fine-grit sandpaper to thoroughly clean the outside of the pipe ends for at least one inch from the cut. The goal is to remove any oxidation, paint, dirt, or grease, revealing a shiny, smooth copper surface for the fitting's O-ring to seal against.