This is a sword (really abstract concept of one anyway) that I came up with that uses a column of abrasive material as the blade. The column is rotated at supersonic speeds by a motor that is built into the grip of the sword. This high-speed rotation is able to essentially sand through even super hard materials like armor.
The model has bones and can be posed.
Another view of the sword.
The “blade” of the sword also can be detached and replaced in case it became too dull.