Check out this edge geometry

T

the possum

Joined
Jul 31, 2002
Messages
2,954
A co worker complained that his splitting maul just wasn't working out, saying the edge was way too thick. It just bruises the wood and bounces out a good portion of the time. He cuts wood for heat about twice a week, and often works with other folks, so he's gotten to compare his maul directly against others. So he brought it in to see if I could do anything with it, but I wasn't anticipating this:

maultopkm8.jpg


maulfrontef1.jpg


:eek: OMG!

You're looking at an edge bevel that is right about half an inch thick!!! Ground just shy of 90 degrees!

This is a new Collins 8 pound maul; I'm going to have to invest some serious time with an angle grinder to get this thing in shape.
 
:eek: That's a thick grind. How does nozh say it? "Edge like an ax"? ;) Put a nice 25/25 edge on it and it will split just fine.
 
just make sure you don't mess with the temper by getting it too hot on the grinder.

I found an old hatchet stuck in a tree on my grandfather's property. He sharpened it up for me on his grinder. Got it so hot that the temper was ruined on the edge (I did not know that at the time, I was just a little kid).

I need to do some work on my father's maul. Last time I was splitting, a bunch of the wood from the same tree was so hard that it would take 20 hits to split. Using wedges did not make it any faster. In 20 years of splitting wood I had never experienced wood that tough. I took a bunch of the chips as fat wood for my fire starting kit. So much pine sap hardened in the centers.
 
Josh K said:
That's a thick grind. How does nozh say it? "Edge like an ax"? ;)
Click to expand...

My axes mostly wear edges between 15-18 degrees per side as just a narrow almost-micro-bevel. From there they convex and gently blend way back into the main grind. I think my axes would be insulted to be lumped in with this thing! :)
 
I would not have even taken that out of your co-worker's hand. You might as well start with a liquid cooled bandsaw. I hope you get paid for your work.

Good luck.

Doug
 
"This is a new Collins 8 pound maul"

I'd suggest taking it back to the store before spending time trying to sharpen it.
 
That is new? Is he trying to trick you, or is it really THAT thick? That is astounding..
 
Send it to tom krein lol hell put a nice edge on it for probably acouple hundred bucks lol
-Barry-
 
Remember that a maul is not really a cutting tool-it's a wedge that you swing.
 
Mays well not even have an edge... jeeze. Never seen a maul with that type of edge. I used to sharpen mine with a file.
 
Bigfattyt said:
just make sure you don't mess with the temper by getting it too hot on the grinder.
I found an old hatchet stuck in a tree on my grandfather's property. He sharpened it up for me on his grinder. Got it so hot that the temper was ruined on the edge (I did not know that at the time, I was just a little kid).

I need to do some work on my father's maul. Last time I was splitting, a bunch of the wood from the same tree was so hard that it would take 20 hits to split. Using wedges did not make it any faster. In 20 years of splitting wood I had never experienced wood that tough. I took a bunch of the chips as fat wood for my fire starting kit. So much pine sap hardened in the centers.
Click to expand...

I'm not sure mauls have tempers, and if it did, I'm fairly sure its gone by now :eek:
Anyone making an edge like that properly don't know anything about it, much less heattread and tempers.
 
Hawkings said:
I'm not sure mauls have tempers, and if it did, I'm fairly sure its gone by now :eek:
Anyone making an edge like that properly don't know anything about it, much less heattread and tempers.
Click to expand...

...or maybe it was just a defective example? I'd be very surprised if it was supposed to have an edge like that.
 
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