Forged in brotherhood

Bones for the handle and make sure to tan the skin. But use the iron from the blood to make the blade. But you will still need 400ish more people’s blood to get all the iron

Oh and teeth on the butt of the sword

Or with Cremation and with some Pressure you can make a Diamond sword

using raw iron and the carbon from the ashes after cremation will make a nice quality metal that can create a high quality sword or knives