Prop / Weapon Design Sheet

Hard-surface weapon concept sheet: an original modular survival-tool "harpoon spanner", convertible wrench/harpoon gun built from salvaged ship parts, brass and blued steel with worn walnut grip, rope winch drum, pressure gauge, folding hook, serial-number plate worn blank. Orthographic front/side/top views plus 3/4 hero render on neutral gray studio sheet, accurate mechanical proportions and believable materials, subtle grime and usage scratches, exploded-view inset showing three modules, AAA prop concept art, soft even presentation lighting, faint blueprints grid, no readable real brands --ar 16:9 --style raw Follow-up: "texture material maps sheet: albedo, roughness, worn-edge mask suggestion"; "same prop, three faction paint variants".