This design came out of a question I asked myself. What makes an axe, an axe? I came up with three criteria for what I consider an axe. 1) It has an edge. 2) It has mass for driving that edge. 3) It has a shaft of some kind. Normally the edge and the mass are combined in a heavy head. But I don't think that has to be the only solution. So I came up with this design, with a side and top view. I think of it as a sort of post-modern axe.
The edge is reinforced by the horizontal bars. The central mass would be cast iron or steel. As would the pommel, for some balance.