Larry Potterfield of MidwayUSA demonstrates the technique of draw filing an octagon barrel. This essential metal preparation step involves using a single-cut lathe file, chalked to prevent sticking, to remove machine marks and scratches. The process requires careful, level strokes with slight downward pressure, moving the file incrementally with each pass. Protecting threads with masking tape and dovetails with inserts is also advised. Draw filing is presented as a foundational, albeit labor-intensive, stage before polishing.
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