A Multi-Purpose "Tank" Knife: Extrema Ratio A.M.F (Review)
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- čas přidán 10. 01. 2019
- ** Specifications **
Overall length: 34.5 cm / 13.5 in
Blade length: 20.5 cm / 8 in
Blade thickness: 5.5 - 6 mm / ca. 1/4 in
Weight: 490 g / 17 oz
Blade material: Bohler N690 cobalt stainless steel (hardness 58 HRC)
Handle material: Forprene (vulcanized thermoplastic elastomer)
Construction: Full tang, nut assembly
** Pros / Cons **
+ Extremely strong and durable
+ Shaving sharp edge out of the box
+ Secure and comfortable grip
+ Precise fit, well shaped guards
+ No hand shock when chopping
+ Versatile and practical as either survival or combat knife
- Expensive
- Swedge interferes with batoning
- Loose fit in the sheath
- Spine can't be used to strike sparks on a ferro rod
** Verdict **
As a multi-functional survival knife this is quite well designed, aside from a few flaws / drawbacks. It can cut, chop, pierce, pry, and smash if needed. Based on my testing I can say it would take a lot of hard (ab)use to even come close to damaging the blade.
There is a lot of attention to detail in the way the handle is shaped, and it's very practical. Despite the high production quality I can't help but feel it's somewhat over-priced. If you're not deterred by the price tag however I can recommend the AMF.
** Where to get it **
In Europe (comes with free laser engraving and diamond sharpener):
Black - bit.ly/2qjhBGY
Desert - bit.ly/2qhZUaD
In North America:
amzn.to/2RFQXXW
** Previous reviews of other ER knives **
• Review: A REAL Tactica...
• Review: Extrema Ratio ...
• Review: Resolza Foldin...
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I like that little half guard by the pommel
Hopefully it can be twisted off.
it's a stop meant to keep the knife from slipping out the hand
What do you like it for? For the looks, or does it have any practical use?
@@kalma5003 looks loke it coud open a bottle
@@kalma5003 It's kept from the italian "roncola" ( www.iltamtam.it/wp-content/uploads/2013/03/roncola.gif ). It has two uses. First, it prevent the handle to slip out of the hand even if you use a very low grip (useful for chopping), second, it protects the little finger from impacts (again, useful when chopping)
I don't think it's accurate, Skall...I don't see any cannons in this "Tank Knife"
Obviously it's a knife 'for' tanks. For when you have to fight a tank hand-to-hand.
ArkadiBolschek I'm such a moron, now everything is clear, might as well get one of these then we never know when we might get in a street fight with a tank. Thanks.
@@Palatinus-Z Now you know. And knowing is half the battle.
(The other half is having a tank knife at the ready!) :D
That's because it attaches to the tank barrel ^^
bconneau Good thinking, tanks also get in street fight with tanks.
I had no idea there were so many distinctions and categories for knives and swords, till I started watching your channel.
*Obligatory pommel joke since I have noticed a decrease in this meme and I do not want it to disappear forever*
There's literally two pommel jokes under this comment...
@@Orcus__ I noticed. Good to see
hushhhhh....just let it happen.
Cheesy Child
I give you like for the pfp and the concern for the lack of pommel memes
Pommels never die
It looks more like a combat knife than a survival knife imo
In a way quite a number of tantos would be better survival blades despite being meant as combat weapons
I mean there's not too much of a difference tbh
Very 80s jungle survival knife
@@passonthestar3689 well the reason I say combat knife, is because of how that spine is shaped, it's narrow, and with that grind it really looks like a knife designed for stabbing something very effectively and not getting stuck
Plus it looks cheap in my opinion.
The price is kinda iffy for me but the real killer is that gaudy b.s of a company logo splattered across the entire length of the blade. Look you're already charging highway robbery for the blade, maybe cool it off on the logo and people might be more willing to buy it.
Seriously why do companies feel the need to plaster their products with that kinda of b.s?
The reason why is advertising. It definitely is gaudy but a lot of people are used to it.
You could have a knife handmade to your exact specification for that kind of money.
@@lordkandar I think advertising is better placed on cheap products. If you're selling a well-made item for good money, a logo will only detract from quality. At least, I think it does.
BILTEMA
I like the innovations. Truth is how skilled you are with your tools, more so than the tool choice. Such is consumerism, its easier to pick a great knife than be great with a knife.
Dang, one hell of a knife. Definitley something to consider if somebody seeks a good one for trekking/survival (or, you know, just another cool piece for their collection). The price is a big high, sure, but considering the undebatable quality not unjustified. Awesome.
I like the disassembility (a word I just made up) I think it's great to be able to take your knife apart for customization and cleaning and wish it was more common among fixed blades.
Batoning that post, board, plank, whatever, you certainly ended it rightly. Happy New Year to you and yours.
I have to agree with TheStraycat74 here, Skall. My best and favorite knife is my KaBar. I have the KaBar BK-9 aka the Becker Comat Bowie by BK&T of Olean, NY. It has a 9" blade of 1095 high carbon steel, has a near full blade flat grind, composite handle, full profile tang and has remained shaving sharp through a lot of rough use. I've had it a few years now and just strop it in between uses to maintain the edge. The baked on black coating is tough s nails. Mine was right around $100 USD at a local surplus store. We still have our beloved Grandpa Joe's Marine KaBar from when he served as a Navajo Code Talker in WWII. It's still shaving sharp after over 70 years of abuse. KaBar still proudly makes that same knife today in stacked leather and modern composite handles. KaBar rules!!! PS: I did enjoy the video and like the knife you showed. I just think it's over-priced at nearly $400 USD.
czcams.com/video/Ss6vgkaLtfs/video.html
www.kabar.com/products/BK9 (Don't pay retail. You can get it on Amazon for about $110.00 USD)
Ok...so...new knife for the collection...thanx, Skall!
Ooo a stabby stabby
Please, not all are experts around here.
Refrain from using the scientific terms, if you might.
A stabbo sticko
@@Orinslayer A-again. Those scientific terms...
Does it have a removable pommel?
It does, very nice
Just ordered several.
It literally does
Indeed it does
Agree with you on the lettering size. Makes it look like a truck stop knife.
The review was really helpful in showing what you should check in a multi function knife.Can you do more reviews but on more affordable knives?
$380 USD for ONE, but I can buy 5 Ka-Bar's for that price... I'll pass thank you.
Yeah, it's a really steep price.
I would spend it on a KABAR BK7 over the KABAR USMC anyday.
@Imperator it works. Just don't beat it through a tree or something. Axes exist for a reason.
I've owned a Ka-Bar for over a decade and have used it for EVERYTHING including batoning and it's still the best knife I have ever owned. heck, it's 10 times better than the knives I MAKE.
@Minute Writer trees included? What about all those tests videos and horror stories of kabars bending stuff
Excellent review. Including the more bushcraft stuff should sit well. Nice work.
Yeeeeahs, Reviews!!!!
I used to have a survival knife with a hollow handle, In the handle were two spikes that could be screwed into the holes on the guard, the upper and lower both angled, so that you could use it as a grappling hook. I guess I thought I was going to be a ninja! I wonder what the holes in that guard are for on this knife. Glad you mentioned Ka-Bar!
I'm really digging this knife
Good God! For that price I expect no flaws and a lot more on my knife than what's offered here.
The jewel of my nation, Italy :-)
Woo! Knife review!
Hmm, regarding the "Tank" knife, I only consider the Fulcrum from Extrema Ratio really satisfy that definition. A very straight forward and extremely strong tanto tip blade, and the military version is double edged at the tip(sharpened swedge). The design is so successful, that they made it into a rifle bayonet.The bayonet version in particular was copied by many other European countries. Till today I consider Fulcrum to be Extrema Ratio's flagship product.
Hi skall,
Just wanted to thank you for this kind of videos. I'm not even remotely interested in buying this kind of knife, i have an opinel for 95% of the time i need one and a big old antique from my grandfather for the rest.
I'm just interested in the design and the technical reasons behind each features, and you have a natural talent to explain things clearly and get your message across. Same with your videos on techniques. Keep it up and thanks again !
Damn skall! I was looking into this knife!
But how am I supposed to fight Swiss pikemen with such a short knife?
You can throw it... or mount it on a stick! Or if you are a rogue, use stealth and get a sneak attack bonus... ( ͡° ͜ʖ ͡°)
throw the pommel, might take out a whole block of pikemen.
You get close to them one , pretend to be friendly and go assasin style, or you cut poisenois berries in ther food when no one is looking.
I appreciate your videos! I'm looking to buy an extrema ratio knife and am using your videos to help me decide. It's between the AMF, Doberman and the KS Kukri. If you could only have one, as a do all type of camp knife, which one would you pick?
Nice knife indeed.
Have you done a video on the Fairbairns-Sykes flighting knife issues to the SOE during WWII?
Glock FM 78 is also a good one (especially for the price -about 40 "bucks") after some modifying....
To my mind this is a fighting knife and broadly similar knives can be found at army surplus outlets at far less cost
With the removable grip I can see aftermarket grips being popular
That is a nice knife.
Have you ever put a standard Ka-Bar through your tests? I know hundreds of people have, just curious if you have.
Imagine cutting food with that shit.
Most badass chef alive
Hey Skall did you ever review cold steels GI Tanto? I have one and it's a pretty good blade
Hi Skall, Have you done a review of the Terävä Skrama knife ?
Can you do a knife review more in the €50-€100 range? I would love a good survival knife, but €350,- is just way out of my budget.
menno graafmans I would love to see some dedicated combat knives for self defense reviewed.
Just buy one of Kabar's becker knives.
The Hudson Bay knife is like 50usd and that's a pretty good survival knife
It doesn't have any fancy features but it's a giant knife so that's good
Try Mora's or a Kabar BK2 or 7
Ycan also get buck knives for under $100 , not sure about price in Europe though... & they have pros & cons, more on the hunting side than a "go cut down a tree with my knife as i spent to much to buy a hatchet".
Will temperature effect ballistic gel characteristics?
Also if you read my comment what temp you do testing in? is it consistent?
Remaining in Italy, if you can find it, you should try Olivetto knives
Can you do a review of the double bladed sword fighting style like you did a couple years ago with the reversed grip fighting style
Kind of like a cross between a KBAR and a Gerber BMF with updated materials. Looks like a saber scandi cross grind also..batons are replaceable, so I assume the swedge is deep to facilitate penetration.
You could baton the end of a long stick and then take the handle and fittings off and put the tang in the split. Tie it
I'd like to see you review Survival Lilly's knife.
Hey Skall,
can you have a look at one of those overhyped Tirpitz knives? :)
Now thats a knife
Extrema Ratio makes some good ass knives.
But why an allen key to remove the tang stud? Wouldn't it be better to have a flat head or Phillips head so you can remove or tighten it with anything?
Have you looked at the kabar grass machete yet? Every time I swing mine I feel like I'm swinging an awesome short sword.
I carry a saburo survival buck knife and a black ronin tomahawk ("throwing ax"). thoughts?
I chose the black ronin so I can make a makeshift full size ax, or easily just carry a "hatchet."
the saburo was a gift but I have a hook and line stored in the haft. compass is shit.
Skallagrim could you do a knifebox review ive been wanting to know if k should get it like is it quality
Would like to hear your opinion on the msk-1 survival knife
Looks almost too good to be true
One of its "Advanced Multi Functions" is advertising... Could they not fit a bit more billboarding on that thing?
*_Try using the guard bits to get sparks_*
Make a video talking about if spinning around in a circle with a sword like garren is pratical
use the corner of the guard/back of blade to strike for firesteel
When you do a review can you try the knife to the point of seriously damaging it? And can you keep it afterward or you have to send it back?
You can use a pice of rock or a striker that comes with rod a smooth spine is way better for extended use
Could you review Survival Lilly's APO-1 Survival K.N.I.F.E.?
That billboarding is intense smh
Cool.
11:05 ,,You can do a lot with that tip'' 😂😂😂
I is here!
can you review the Fulcrum?
Skal, no coating will hold up to use and abuse, especially when chopping dried out, hard wood, throwing and banging the knife against stones. The wear doesn't look exaggerated by any means.
Yeah. I've yet to see a coating that survives the impact with a stone.
There was another knife that looked almost identical to that... I believe by Gerber. Maybe 15 or 20 years back
It certainly looks like a refinement of the old Gerber BMF, that's something that extrema ratio constantly does, take and old but proven design and make a modern version, like the. E.R. commando witch is clearly inspired by the Fairbairn-sykes.
What's with the step-down in the grip? That looks like it would be uncomfortable.
Hey, I know it may be a lot to ask, but can can you review the Rakuyo (a sword from Bloodborne)
Reminds me of the Gerber BMF
A sabre grind is a kind of flat grind. flat is a category, sabre is a subcategory. A sabre grind is any flat grind between a full flat and a scandi in edge bevel.
any Plans of testing the fulcrum?
Could you test an old ka-bar?
she: just the tip!
Skall: *smiles* you can do a lot with that tip
Hi there, am I the only one thinking of James McAvoy in Split when Skall says "et caetera" ?
If I ever needed a knife to make it through the apocalypse, this'll be it.
Hi Skall, just wondering If you find yourself in a survival situation (natural disaster, war, apocalypse etc.) would you take this knife? or would you take other knives? If so, which one?
Best to have 2 or more knives in a survival situation. If I was in one i would take a Cold Steel Gurkha Kukri and a Mora knife for precision work like carving.
I would take my karambit and ice pick perfect for bushcraft stuff!! 👍
@Zack Ceasar how much heavier than good enough?
Take a real hatchet and a long fillet/chef's knife. Why screw with overpriced half-ass combo knives that do both jobs badly when the real things are lightweight, easy to carry, and cheap? Gimme $30 & 30 minutes in Walmart and I'll get a razor-sharp titanium 3-knife cook set w/sheaths that will finely process foods & fibers, a light hatchet that outchops any knife & will crush skulls, plus scissors, a sharpening stone, and gloves to wear while using them all. "Survival" knives are codpieces.
@@animistchannel2983 what are you gonna do with a kitchen knife
Can u do the Blades of Chaos?
Beautiful knife. And seems useful
question: what is the multi-purpose here? it stabs and cuts and you can baton it to split wood, so it's a knoife, what else?
if I ever get one, I'm going to use paracord and a mini survival kit to turn the 2 part guard into a D guard
Skall: "you can do allot with that tip."
I have this weird soft spot for Extrema Ratio knives even though they are tactical/combat oriented. I am way more likely to need a knife for outdoorsy stuff or opening packages than stabbing opponents.
I will say that the one Extrema Ratio folder I have is top shelf and super cool but is a heinous bitch to sharpen.
11:07 you can do a lot with the tip ;p
Was searching for that comment :D
Oh, you.
ive had no complaints from the missus yet
It's true what you say Skall, "You can do a lot with the tip!" if you know what your doing that is.🤣👍
To come back to the Grievous question from yesterday's stream, I think a lightsaber pike would be the best choice in this situation
I like their knives, I don't own any, but they seem quite good, still: I'll buy something a little cheaper, maybe the German Military Knife, the Kampfmesser (engl: Fighting Knife) 3000 without serrations (don't need them and they are a pain in the ass to re-sharpen!)
This knife is a re make of the Gerber BMF- "Basic Multi Function" hence the "Advanced" designation. Gerber made several iterations of the BMF, with blades ranging from 7 to close to 9 inches. Some of the 7 inch models could be had with chisel saw teeth. The Gerber had a DuPont Hypalon handle that is very comfortable and surprisingly durable as it feels like a very dense foam. The sheath was similar to the ER's but included a pouch for a Silva compass that came with the knife as well as a diamond sharpener on the back of the sheath. The BMF was made to compete in the post Rambo knife world.
Skallagrim do a video about the mighty cape on Knights.... or is it just a fantasy thing???????
Sweet, an anti-tank knoife!
This knife is very similar to Gerber BMF, not Ka-Bar.
Batoning is scout practice, no one needs it to survive.
As for use with an ferro rod, just use the Dremel in a little piece of the spine or take any piece of steel along with the ferro rod.
what's the difference between a swedge(?) and a distill taper?
JN Baker a swedge generally is only toward the tip of the blade, not the entire knife. But more importantly a swedge is ground from the spine towards the edge, while a distal taper is ground into the entire "side" of the blade
I have a question about your other videos...how do you grab the blade without cutting yourself? Let's say you being attacked by a heavy weapon and have no choice but to block. Sometimes I see you grab the blade with the left hand also to block heavy attacks....Now in a real battle I'm always wondering how that would work bc I believe you would cut your own hand doing that......I know I'm missing something here lol, probably sound dumb to but could someone answer this?
He made a video with the title "Why grabbing a sharp blade isn't always crazy" or so.
Wow that price Tag! 😱
The stainless steel isn't a negative (or at a minimum not preferable)? Still learning here, so appreciate any response.
No, there are plenty of high end stainless steels. They wouldn't be suitable for very long blades like swords (too brittle) but for knives they are excellent.
@@SkallagrimGood to know. Thanks!
You should get someone to make you a knife for testing. As in a fine English hunting or camping knife.
sUrViVaL kNiFe
For a $600.00 (CDN) it better be indestructible and amazing.
It really looks like an old Gerber BMF