Step 3 · Deburr the Pipe Interior and Exterior

This is the step people usually slow down on. Go finger-tight first, then a quarter turn. No rush — replay the clip whenever it helps.

The cutting process creates a small ridge, or 'burr', on the inside edge of the pipe. This must be removed to ensure proper water flow and prevent turbulence. Use a deburring tool, the triangular reamer on the back of many tubing cutters, or a round file. Insert the tool into the pipe opening and twist it several times to shave off the burr, creating a smooth, beveled inner edge. Also, lightly file the outside edge to remove any sharpness or external burrs.