I gotta say, this is one funny bug:
all of these axes are demon blood battle axes, just with different textures, and I did this WITHOUT any modding
here's what I did: equip a tool/weapon and switch to demon blood axe, the axe seems to take over the texture of the previous tool/weapon everytime, the last one is how the axe looks when I relog with it equiped
this gets pretty funny with wooden tools (like the baking spatula), but I didnt screen any of those yet