Artists often embrace chance and unpredictability in metal artworks to create dynamic, one-of-a-kind pieces. One common method is the use of uncontrolled oxidation, where metals like copper or steel are exposed to chemicals or weather, resulting in unpredictable patinas. Another technique involves "drop forging," where molten metal is dropped onto surfaces, allowing gravity and natural forces to shape the final form. Some artists incorporate fire or heat, letting flames warp and texture the metal in unexpected ways.

Collage and assemblage techniques also play a role, as artists combine found metal objects in spontaneous arrangements. By relinquishing strict control, they invite serendipity into the creative process, producing organic, emotionally resonant works. These methods challenge traditional notions of precision in metal art, celebrating imperfection and the beauty of the unexpected.