Some Mora Observations

Vivi

BANNED
Joined
Dec 4, 2005
Messages
5,095
Tonight I spent the evening building a big fire with my friends in a little patch of woods we like to explore. Brought a lot of knives with me (Khukuri [Unsure of model], Frosts #760mg Mora, Opinel #10, Brusletto fixed blade with 6 inch blade and a Spyderco Yojimbo) and enjoyed using them. I was especially hard on the Khukuri (Which I believe is from HI), swinging it as hard as I could into iced-over logs then batoning them into sections. I'm going to have to purchase more of these knives, I really like them.

At some point during our campfire discussions I got to telling them all about the destructive knife testing that goes on in the knife community. They were intruiged. I decided the Mora would be fun to let everyone play with.

The first thing we did was throw it into trees. No damage. Went around chopping at some fallen trees. Nothing. Stabbed some logs and pryed it out, nothing. Batoned any branch small enough to fit the blade length. Held the blade in the fire for about half a minute, then repeated said tests. No noticable difference, still no edge damage. They were complaining at this point so I decided it was time to break it. I stabbed it into a log, then hammered it in with the Khukuri. Pryed it out like before, only much more stress was on the blade this time. I got some permanent bends in the blade at first, but just bent it the other way and hammered it roughly straight. Later on we lost about 2mm of tip.

Next, hammered it in real good, put some pressure on and heard the blade cleanly snap.It broke off right after the second "e" in the word Sweden on the tang stamp, or roughly 1 and 3/8th's inch from the handle. I'd estimate the knife was about half an inch in the log when we bent it to breaking point. The break was extremely clean, a perfectly straight fracture perpendicular to the cutting edge. Interestingly, part of the handle on the side I was bending towards broke off too. We chopped with it some more after this and found the tang to still be held in place despite the missing chunk of handle.

After this we batoned what was left of the blade through some old beer cans and a discarded street sign near our fire pit. This was interesting to me, because despite the acute edge bevel in the stainless Mora, the blade suffered no damage aside from some burring after being hammered through a street sign with the Khukuri. Seems to lend considerable weight to the idea that media normally destructive to a blade edge during a chopping or similar use can be handled with a more controlled batonning action.

I'll edit this post in a few minutes with a photograph or two. If anyone would like me to mail them the knife for some more scientific examination or anything, just drop me an email.

2wfph5g.jpg

44tutz7.jpg

35k1pmw.jpg
 
This is very similar to what I've found out when I did a destruct test on a Frosts about ten years ago. It took alot of deliberate force to break the mora blade in spite of it being so light. Took amazing punishment, very durable.

The frosts mora is about the only fixed blade I carry these days combined with a couple of good pocket knives. If I need something bigger and heavier, then thats what they make 12 inch Ontario mchetes for. Now theres a tough piece of steel.
 
Sounds interesting. A while back, dad brought me home a 100 year old Sheffield carving knife, that had a badly damaged tip. I decided to regrind it into a kitchen knife, and tried breaking off the tip to save time. I ground notches in the spine and edge, then locked the blade in my vise at the notches with just the tip portion sticking out. I started whacking it with a hammer, and even with the notches it took like 8 or 10 swings to finally break it off. The tip was bending 90 degrees, flat to the vise jaws, at those notches, with every swing, and still held.


Something about your last picture caught my eye-


Notice how it broke exactly where the vertical lines line up on the N in Sweden, and the L in Steel? I wonder if this caused a stress riser.
 
Interesting test of the Mora from Frosts. That knife took a real beating for sure. I am sure many other knives would fail that Savage test as well. Interesting test! Thanks!!
 
Nice work Vivi. I like tests of these affordable knives. It makes a very clear case for those who belive batoning a knife that is 30 time more expensive constitutes abuse. Or for those that think a knife needs to be made of 1" thick steel to withstand some campfire work.....

The piece of the handle that broke off when the blade snapped is due to the backlash. Right after the break, the blade snaps back so violently that the vibration on the other end causes the damage. It is the same reason why you can not break a dry (uncooked) spagetti into only 2 pieces by holding it at the ends and bending it till it breaks.
 
I EDC'd a 3/8 inch Bowie knife for a short time that could pass almost any test. However, who is going to carry this heavy monster with their trousers down to their ankles? Not me... I seen Deliverance already & am not ready to bark like a pig..hehehe
 
BTW, Vivi, next time we do a trade, my knives will be drawing straws to volunteer. :)

Good test.
 
Still have the one you traded me, I had a duplicate. Very comfortable handle on it.
 
This was interesting to me, because despite the acute edge bevel in the stainless Mora, the blade suffered no damage aside from some burring after being hammered through a street sign with the Khukuri.

That class of steel has very high chip resistance, almost no carbide, so you have to basically tear it apart.

I started whacking it with a hammer, and even with the notches it took like 8 or 10 swings to finally break it off. The tip was bending 90 degrees, flat to the vise jaws, at those notches, with every swing, and still held.

Same thing.

-Cliff
 
I have an old carbon steel Mora. Very hard - I have taken a shaving off a piece of mild steel with it with little edge damage.
 
Back
Top