Been using a fiskars cutting axe for splitting down to rocket stove size pieces for over 3 years now and simply love it ! Recently was at a friend's house where he had both the 28" & the 36" fiskars super splitting axe. I never knew they had a splitting axe ... After trying both I went home and ordered my own 36" super splitter axe. Wow ! these things will split some wood ! I've been using conventional 8 lb splitting mauls and wedges for 35 + years , NO MORE ! This 36" 6.3 lb super splitter just pops wood apart , and it's SO LITE !!. I guess that in 350 years fiskars has learned how to make an axe ! Lifetime warranty , made in finland, highest quality, seriously sharp ! Who cares if they cost in the $50.00 range!!! If you're planning on a lifetime of wood splitting then invest in the best and you won't be sorry ! Or you can own a good hyd log splitter and not need a splitting axe... but you'll still need a nice sharp cutting axe to make them into rmh size pieces...
The only drawback to the Fiskars line of axes/mauls in my opinion is the inability to change a handle. Yes, the handles can be broken, no, they won't replace it under warranty if you break it: "You had to be using it for an un-intended purpose." Is what I've been told after 3 handles. No axe or maul should be made with a hammer shaped poll if they don't intend for it to hammer wedges and the like... Those handles will break right at the head after a while even just driving plastic felling wedges. It's happened to me enough that I would call it a design flaw.
All that being said, I do still own 3 versions of Fiskars and that get used very regularly by my whole family.
I'll admit that I actually don't use the axes at home but only because I'm a tool snob and like using my Gransfors Bruks axes even more, but my wife and kids aren't allowed to touch those, hence not retiring the Fiskars completely.
"Instead of Pay It Forward I prefer Plant It Forward" ~Howard Story / "God has cared for these trees, saved them from drought, disease, avalanches, and a thousand tempests and floods. But he cannot save them from fools." ~John Muir
You might consider a felling axe for wedges, and just use this as a splitting axe....
I have split all the wood fora girls out camp for a year with one and had no trouble, that doesn't mean I will never have trouble, but I tend to treat tools really well so I can buy new stuff instead of replacements! I'm a toolaholic!
Also this is total American tool stuff, made to be used broken and rebought, disposable to most folks...sad but true. If you want old world quality I would look into axes and mauls made by Gransfors Bruks in Sweden, those will cost you but you can be assured you will buy them once, I own their hewing axe in two different forms, and the quality is superb!
On the other hand the heads of the ones you have broken would make good wedges, and I think I could make a handle for them and use a press to get the fit right. Try that!
Whoops just read the end with Gransfors in it........foot in mouth!
Four years later and.....I still think that these simply are the best axes for in the woods firewood splitting. As stated the Gransfor Bruks may be the Cadillac of high end axes...superb on a chopping block... but in my opinion nothing beats this fiskar for real world stand them up and split them down, on the side of a rock filled dirt road. Yup I use a hand maul for plastic falling wedges and I keep a traditional #8 maul for driving splitting wedges ...I have yet to have a fiskars handle break. I did buy and use their hand sharpener , I also will take a flat file to them from time to time if I hit to many rocks. But nothing works better than my 36" fiskars super splitting axe ! A COOL TOOL THAT WORKS!!!