traditional katana 3d model

Realistic optimized 3D model of a traditional Japanese katana, no saya, no stand. Long slender elegant single-edged blade with accurate katana proportions, a very subtle natural curve, sharp cutting edge, smooth spine, defined kissaki tip. Blade must be straighter, cleaner, and more even, with no waviness, no bending, no deformation, and no irregular thickness. Polished steel blade with visible shinogi ridge and subtle authentic hamon line, clean and well maintained with minimal light wear. Compact brass or muted gold habaki at blade base. Modest round or slightly squared dark iron tsuba with subtle brass accents. Long slim straight two-handed tsuka, perfectly aligned. Black ito wrap in classic diamond pattern over white samegawa, neat and symmetrical, with simple metal kashira. Balanced, realistic, no fantasy or anime exaggeration. Medium-poly, optimized for Blender. Single centered object, no background, no extra props.