If I were to modify another production tomahawk it would be a Cold Steel "Trail Hawk." I want the hammer poll and it is the lightest option they make with one. I did my work on a "Pipe Hawk" as it is smaller and lighter than the "Rifleman's Hawk," and at the time I thought the cutting edge on the "Trail Hawk," to be too small.
I went with the Cold Steel as they have a great reputation for being very, very, tough, yet taking and holding a great edge, this has held to be true. The biggest wart to deal with, in my opinion, is the set screw they put through the side of the eyelet to "help" secure the head. I don't weld so I really don't have a good way to make this go away. The most obvious issue is that black coating, it is removable,,,,,, but not easily.
The "Pipe Hawk," is still too heavy. And, the pipe bowl shaped hammer poll is fully to use and makes sheath fabrication a little more tricky. I think if I can get access to a metal fabricating chop saw I am going to cut it off creating a thick flat at the back of the eyelet like this,
current configuration.
proposed cut line. Then some file work.
If I had access to a bench sander I would remove more of the rough surface and polish everything more. With just hand tools, I decided to leave it looking rough. The bench grinder does more harm than good.