A 16‑pixel blade in the real world would be a real tiny sword, not a toy. You’d pick a spring steel or even a high‑carbon alloy like 1095, because the strength has to come from the metal, not from magic. First you forge a tiny block, hammer it thin until it’s a sheet about a millimetre thick, then shape the blade in the anvil, keep the edges sharp with a small file, and finally temper it in a small crucible at around 400‑450 °C. The result is a razor‑sharp edge that still holds up if you actually swing it—just don’t try to cut a bread loaf with it, the handle would give way before the blade does. If you want to test it, weld a tiny handle, temper, and then hit a soft block to see if the blade stays firm. That’s the only way a pixel‑size sword can be more than a pretty picture.