The bare machined surface, left without further treatment. On copper and brass it will patina immediately with handling; on titanium and steel it shows tool marks, sharp edges, and the honest geometry of the machining pass.

Raw finish is a deliberate choice when a maker wants the material to speak without interference — or when the object is designed to age and the raw surface is the starting point of that process. It is not a cheaper option; it requires clean machining to read as intentional rather than unfinished.

Objects in raw titanium develop a subtle patina from handling that many collectors consider one of the better finishes the material produces.