Dutch Bushcraft Knives

[nick681]

That will teach me to come out of hibernation and start a thread I guess I was late for the party, mods feel free to lock or delete this thread

 

[ironwagon]

Welcome out of hibernation bro!!

 

[duramax]

That will teach me to come out of hibernation and start a thread I guess I was late for the party, mods feel free to lock or delete this thread

Good to see you back

 

[Jack of All Blades]

I just saw a video yesterday by Knife Steel Nerds and in it he states that Cpm-154 has about 60% the edge retention as S90V but SURPASSES it when ground to 13 degrees per side vs s90v at 18 degrees per side. Not sure why this seemed like a shocker to me when I knew geometry cuts but I guess I thought geometry was more pertaining to behind the edge thickness not JUST edge angle.

Im sure the edge retention ,or lack of, shown in the Dutch video are mostly due to edge angle, same with the Cedric Ada video a few years ago which I just re-watched and noticed he said the angle was likely a whopping 30 degrees per side! (And was still on par with many other steels at 20 degrees or less)
For the Cedrics magnacut test,
20 degrees = 360
17 degrees = 600 , a 66.6% increase
15 degrees = 925, a 54% increase from 17 and 156% increase from 20 degrees

Im noticing other steels having the same effect somewhere around 50% cutting increase for every 2-3 degree drop,
Does this mean Infi at 15 degrees per side would be able to cut roughly 1,474 times vs 88 times following the percentage of performance increase for every 5 degrees??? (30, 25, 20,15)
Probably, probably not, Who knows, I hate speculating.
Seems everyone is so curious of what Infi can do but no one has taken maybe a warden or reprofiled something thinner and rope tested. Maybe because Infi owners already know what it can do and simply don't bother because they are satisfied? Because that's my excuse. Still frustrating to see people not use it in the right application. Pretty sure s90v wouldn't cut that much at 30 degrees either right?

Seems there's a need for viable testing of Infi but no ones bothering too.

 

[lmcq784]

I just saw a video yesterday by Knife Steel Nerds and in it he states that Cpm-154 has about 60% the edge retention as S90V but SURPASSES it when ground to 13 degrees per side vs s90v at 18 degrees per side. Not sure why this seemed like a shocker to me when I knew geometry cuts but I guess I thought geometry was more pertaining to behind the edge thickness not JUST edge angle.

Im sure the edge retention ,or lack of, shown in the Dutch video are mostly due to edge angle, same with the Cedric Ada video a few years ago which I just re-watched and noticed he said the angle was likely a whopping 30 degrees per side! (And was still on par with many other steels at 20 degrees or less)
For the Cedrics magnacut test,
20 degrees = 360
17 degrees = 600 , a 66.6% increase
15 degrees = 925, a 54% increase from 17 and 156% increase from 20 degrees

Im noticing other steels having the same effect somewhere around 50% cutting increase for every 2-3 degree drop,
Does this mean Infi at 15 degrees per side would be able to cut roughly 1,474 times vs 88 times following the percentage of performance increase for every 5 degrees??? (30, 25, 20,15)
Probably, probably not, Who knows, I hate speculating.
Seems everyone is so curious of what Infi can do but no one has taken maybe a warden or reprofiled something thinner and rope tested. Maybe because Infi owners already know what it can do and simply don't bother because they are satisfied? Because that's my excuse. Still frustrating to see people not use it in the right application. Pretty sure s90v wouldn't cut that much at 30 degrees either right?

Seems there's a need for viable testing but no ones bothering too.

First of all, I’m not a metallurgist. I’m just sharing what I’m also learning.

I was reading other posts and watching videos about steel, bevel angles, and edge retention. The takeaway message I had was that it differs between steels. Some supersteel can have great edge stability and hold an amazing edge at one angle (X°) but have that stability and retention drop off catastrophically when they went 1° lower. All this while another cheaper steel may not hold an edge as well or as long at X°, but also not fail even at 2-3° lower.

There is no magical bevel angle that is “best” for all steels.

I, too, am really curious where INFI’s and SR-101’s optimal degree, for edge holding, sits if I want a slicier edge vs a more obtuse but bomb-proof edge.

 

[dogboye]

Edge angles are funny things, especially when you mix in steel properties.
I have two pocket knives, very similar (actually, they're the same, just one is scaled down). Benchmade's Buck 110 style pocket knives (I already forgot the name)
Both have S90V steel. I've had both of them close to a year. One I've carried probably 80% of that time, cut sticks, paper, plastic, corrugated cardboard, cardboard... pretty much anything except metal. I've only put it to a ceramic stone maybe 3 times; all else has been stropping, and it will shave hair off my arms.
The smaller one is everything the same. Even the same handle scales (I ordered them from the custom shop). No matter what I cut, or how careful I am, I have to use the ceramic stone on it about every two days that I'm carrying it. It is almost like one of them is S90V, and the other is 420J2. And even though you can look at the two of them and tell the smaller one is thinner behind the edge, the edge bevel of it appears steeper. I can only guess that S90V sucks at that steep edge angle, but works much better a shallower edge angle (15/side vs. 25/side, or whatever the smaller one is). It's frustrating. the smaller one should be a light saber. Well, pocket light saber. But it just ain't right. If I had bought the smaller one first, I would have hated S90V and never bought any more. But now it's my favorite. Well, maybe. Only two samples, one is great, almost supernatural. Other one sucks.

With INFI, it seems to be very similar to my experience with S90V. If it has a nice shallow edge bevel (like my TGULB), it stays shaving sharp forever. My TGULB is another blade I have that has seen a lot of use on a lot of material, but has only gotten stropped. But if it has a steep edge bevel (like my NMSFNO), it's kind of a blunt force instrument, even when you sharpen it. Unless you do like above, and really thin it out. I haven't done that. Plan to one of these days. Sometime when I have a broken leg and can't get up for a week or so.