This was a simple build made out of leftover parts. I drew inspiration for this project from Mad Max.
Step 1: Materials & Tools
A recently broken sledge hammer handle
Two old saw blades (preferable one large and one small)
Needle and Thread
Step 2: Saw-Blade Head
The head of the axe is constructed from two saw blades, a smaller one and a larger one. The smaller one was cut into quarters vertically and then welder to the larger blade. Supports are then welded in to reduce the wobble between blades. When welding do not rapidly cool the blades as this will warp them.
Step 3: Handle
The sledge hammer handle is sanded and then a cross section cut into the top. Once this is done oil the handle.
Step 4: Assembly and Leather Wrapping
Apply epoxy to the cross section then insert Saw-Blade handle. If the cross section is tight and the handle splits slightly, put a screw in a place that will pull the handle together and can be cover up when leather wrapping. When leather wrapping, make sure the leather is pulled tightly when sewing together and apply epoxy to the leather.
This wiki shows best how to perform this step.