AI-generated tattoo project: this mechanical sleeve design portrays an intricate assembly of gears, cogwheels, pistons, and tubes marching along the forearm in black and grey realism. The composition reads like a cybernetic anatomy, with each gear meshing into levers and shafts while tubes and springs weave between plates to form a dense, machine-like motif. The line work is precise, with crisp edges and smooth shading that creates convincing depth and a metallic sheen when lit. A large circular gear near the elbow acts as a visual anchor, its teeth interfacing with surrounding components, while smaller gears, rods, bolts, and cylinder-like elements fill the rest of the sleeve. The overall effect balances technical illustration with the organic contours of the arm, turning engineering into body art. This design works well as a full-sleeve project or a bold forearm piece, offering a powerful statement about craft, precision, and the fusion of flesh and mechanism. As an AI-origin concept, the tattoo design can be tailored in scale and density to suit individual preferences, and it easily adapts to different skin tones. The piece emphasizes pattern through geometric gearwork, making it a standout choice for those seeking a dramatic, pattern-rich tattoo design. In terms of symbolism, it can symbolize resilience, systematic thinking, and the harmony between human intention and mechanical power. If you’re after a modern, high-contrast tattoo with heavy black shading, this black and grey realism sleeve is ideal, and it remains a strong example of contemporary body art and ink.