Extrema ratio 39-09 operativo

S

shawn 7.5

Joined
May 4, 2020
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I’ve been looking at one and they seem cool, but I haven’t found any third party reviews of the knife. I’ve only found a few overviews. I have seen a few reviews on some of their other knives, and those reviews were positive. Extrema ratio seems to be a company with decent products, but I don’t know anymore then that. Does anyone have an 39-09 and if you do can you tell me how it’s been for you? I would also love to know what you used your 39-09 for.

extremaratiousa.com

39-09 - Extrema Ratio USA

The result of a project sponsored by COFS (the inter-force operations command for Italian special forces) and its former Commander-in-chief, Gen. Bertolini – not to mention advocated for by knife collectors worldwide – this combat knife is a restyling of the Model 1939 “paracadutista...
extremaratiousa.com extremaratiousa.com
 
Its going to be a dagger on the heavy side and rather limited on use outside its designed purpose (I had a few extrema ratio daggers back when). If you are set on buying it nonetheless just know itll be a very high quality knife and I wouldn't be worried about any QC issues. Check with your local laws regarding carrying and ownership before purchasing
 
ShaiHulud said:
Its going to be a dagger on the heavy side and rather limited on use outside its designed purpose (I had a few extrema ratio daggers back when). If you are set on buying it nonetheless just know itll be a very high quality knife and I wouldn't be worried about any QC issues. Check with your local laws regarding carrying and ownership before purchasing
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Thanks. I do typically prefer drop points, trailing points, straight backs and clip points, but I have a soft spot in my heart for the spear point blade. I know the 39-09 isn’t designed for it, but I would like to know if it would survive batoning. I know it wouldn’t be the best at it, I moreso want to know if it has the durability to survive it and still be usable afterwards. I imagine it will, it’s got a hidden tang that’s quite wide and thick, from what I can see.
 
I don't know about batoning
They have other models i think would be better for that than the knife in question, but people here always encourage members to buy it and report back.
 
shawn 7.5 said:
Thanks. I do typically prefer drop points, trailing points, straight backs and clip points, but I have a soft spot in my heart for the spear point blade. I know the 39-09 isn’t designed for it, but I would like to know if it would survive batoning. I know it wouldn’t be the best at it, I moreso want to know if it has the durability to survive it and still be usable afterwards. I imagine it will, it’s got a hidden tang that’s quite wide and thick, from what I can see.
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Thanks, everyone. I am aware that the 39-09’s blade design isn’t well suited to batoning. If I do buy one, I most likely will not baton with it. I simply want to know if it can do it and still be usable afterwards.
 
shawn 7.5 said:
Thanks, everyone. I am aware that the 39-09’s blade design isn’t well suited to batoning. If I do buy one, I most likely will not baton with it. I simply want to know if it can do it and still be usable afterwards.
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I would say, it will be fine. But things can happen.
 
shawn 7.5 said:
Thanks. I do typically prefer drop points, trailing points, straight backs and clip points, but I have a soft spot in my heart for the spear point blade. I know the 39-09 isn’t designed for it, but I would like to know if it would survive batoning. I know it wouldn’t be the best at it, I moreso want to know if it has the durability to survive it and still be usable afterwards. I imagine it will, it’s got a hidden tang that’s quite wide and thick, from what I can see.
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N690 at 58 HRC might take the impact, or it might not. I'd want to know how thick the blade is just above the primary bevel.

However, the overall shape of the blade does not lend itself to batoning. The only location you would want to hit it is very small. You would need to be extremely precise with your swings.
Reminds me of Gallager's "Sledge-0A-Matic". "Even makes Julian fries...But I swear you gotta hit that sucka JUST right."

39-09_operativo_ambientata.jpeg
 
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Quarter inch N690 from a company with a known good reputation? Yeah, you could bash it through some dehydrated carbohydrate foam.

You're going to get (more) people asking "why in tarnation". For background, my very first post ever here asked about folding knife lock types which are more or less suitable for leverage-based activities.

So, you'll have to forgive me for assuming that the suitability of a knife for batoning/prying/hammering things is being used as a kind of certificate of acceptability: if it'll survive (insert non-knife task), it'll survive whatever you're trying to cut with it!

Will this here dagger hold up to being spine-whacked through a stick? Sure. Will you be able to break it if you try hard enough? Also yes. Just like with any tool being used for something it wasn't intended for.

If splitting wood is your jam, Estwing makes some dandy hatchets. If batoning a knife for the sake of batoning a knife is what you want, Extrema Ratio makes the Fat Boy fixed blade, and it seems a small hatchet of their own.

If a Big Honkin Dagger for the sake of a Big Honkin Dagger is what you're after, the 39-09 is a perfect choice. In that case, it's "suitability" for other (non-dagger) tasks is irrelevant.
 
knarfeng said:
N690 at 58 HRC might take the impact, or it might not. I'd want to know how thick the blade is just above the primary bevel.

However, the overall shape of the blade does not lend itself to batoning. The only location you would want to hit it is very small. You would need to be extremely precise with your swings.
Reminds me of Gallager's "Sledge-0A-Matic". "Even makes Julian fries...But I swear you gotta hit that sucka JUST right."

39-09_operativo_ambientata.jpeg
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It would be overkill, but the 39-09 would be pretty cool in CPM-3V. That being said, it seems extrema ratio loves working with N690, and Is quite good at working with it.
 
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