Artists have long employed metal sculptures to delve into themes of invisibility and transparency, challenging perceptions of materiality and space. By manipulating reflective surfaces, negative space, and perforated designs, they create works that oscillate between presence and absence. Stainless steel, aluminum, and bronze are often used for their ability to mirror surroundings, dissolving boundaries between the artwork and its environment. Some sculptors incorporate translucent elements like mesh or laser-cut patterns, evoking a sense of fragility and impermanence. Others employ polished finishes that absorb and distort light, rendering sections of the sculpture seemingly invisible under certain conditions. These techniques invite viewers to question visibility itself, transforming solid metal into a medium for exploring ephemeral concepts. Contemporary artists like Anish Kapoor and Richard Serra exemplify this approach, using scale and form to manipulate spatial perception. The interplay of opacity and openness in such works reflects broader societal themes—isolation, connectivity, and the unseen forces shaping our world. Through metal's rigidity, artists paradoxically convey fluidity, proving that even the most tangible materials can express the intangible.