CPM MagnaCut | Edge Performance

[TkoK83Spy]

THIS is the kind of testing, and numbers that I appreciate seeing. As said many times already, but what does one more time hurt?? Thank you Shawn!!

Yeah the results are pretty exciting I've been very curious about how the edges dull and wear from being freshly sharpened and very sharp to the working edge sharpness.

Since really what I like are knives that can hold the sharpness well.

I'm also curious to see how other steels stack with what's available off the shelf from production.

I have been doing a similar test for QC purposes but I don't really share those results because they're just for me to make sure my custom knives are doing what I want or if changes need to be made.

I can't say that the data collection is very fun.
Takes a lot of time and it's rather tedious and takes a lot of attention to detail.



So I'm happy to hear you enjoy it as well helps me stay motivated.

Every experiment is only as good as the inputs and the data it generates.

The hands-on part is the fun part, the numbers not so much but they are oh so important. Stick with it buddy!

I can attest that it is definitely a tedious task. I used to do my own reviews and week long use feedback in a thread whenever I'd acquire a new steel. Not nearly as detailed as what Shawn provides us with, and that was pretty time consuming in its own right. But like him, I also enjoyed seeing others enjoy my feedback! Shawn takes it to a whole different level. GREAT STUFF!

[Doc Dan]

This is good stuff. Thanks. I am waiting for more.

Thanks Doc

I added how well the 62.0rc and 62.9rc stropped back from dull.

Theory is all fine and dandy, but practical testing shows what's what.

[Crox]

There is still fatigued metal at the edge, to get the truly sharp edge back I would have to reestablish the apex again on the stone and then stop if I wanted to achieve full sharpness. When I look at a knife I always look at the blade as a reservoir of steel for new edges.

Hi Shawn,

Out of curiosity - were the test samples stropped after the 400 grit? Maybe I missed it in the first post but thinking no strop.

Do you believe (or have tested) if going 400 grit without the stop on rope is better/worse?

[Vaugith]

That's a good read and an impressive level of detail there. I can appriciate that it's very tedious work. Thanks for your effort! It would be awesome to be able to generate a sort of data sheet like this for each mule and to be able to compare, but that's way too much work for any one person.

[ladybug93]

Regarding the factory edge on these mules being sub par, I would be all for them coming without a bevel ground into them at all, especially if skipping that step also manages to shave a little off the price. This would force us users to put our own bevel onto each mule and it would completely eliminate the factory edge performance issues.

That's a pretty interesting idea right there. Would also stave off some that don't want to, or don't know how to put on their own edges, in turn POSSIBLY making it easier to acquire Mules at the drop.

you'd certainly have to really want it.

[Baron Mind]

Thanks BBB

[Deadboxhero]

I figured my fellow edge geeks would appreciate some magnification.

[Deadboxhero]

I've got to say that edge makes me really happy, it just bites instantly.

[Wandering_About]

Thanks for the videos and pictures at magnification. This thread finally inspired me to get a loupe. Hopefully my edges hold up under close scrutiny!

[NCJohn62]

You da man Shawn! A lot of what I do now with knives and my purchases are result of what I've learned from you and other edge retention fanatics.

Thanks Man, I appreciate that.

I've been getting into whiskey and I really appreciate the experts helping me choose the right whiskey it's really put in perspective how nice it is to have people help out.

And that's the great thing about enthusiast communities, so much information that people willingly share. And as a brand ambassador for Maker's Mark I totally can appreciate your journey of brown happy human juice discovery!

[Eli Chaps]

I figured my fellow edge geeks would appreciate some magnification.

I had YT up on the TV when you posted the video. Of course I clicked on it and caught myself saying out loud, "Look at his freakin' scratch pattern. D*** that Shawn!" Meant that in admiration of course.

The wife looks up from her book and says, "Huh? What scratches?" Then she glanced at the TV and muttered, "Oh knife stuff."

[sal]

Nicely done Shawn,

Hey Wanderer,

When I was training our salesmen to pitch the Sharpmaker, "back-in-the-day" (80's), I told the that I was number two teacher. Loupe was number one teacher.

sal

[Bloke]

Bloody Legend, Shawn!

[Fireman]

BBB and the ghost chasers, would you say that the V edge is better at push cuts than a convex?
It is my understanding that the convex edge is better for edge stability which I prefer but for EDC tasks, perhaps a V edge would be better. Next question is does stroping work better on a convex edge than a V edge? I have had good results with stroping on convex edges over V edges. This could be my methods and materials that need adjustment for a V edge. Perhaps strop a V edge on wood rather than leather? Muchos garcias for your replies.

[Deadboxhero]

Thanks for the videos and pictures at magnification. This thread finally inspired me to get a loupe. Hopefully my edges hold up under close scrutiny!

Yeah there's a lot of crazy stuff going on at the edge that you can witness under magnification

[Deadboxhero]

You da man Shawn! A lot of what I do now with knives and my purchases are result of what I've learned from you and other edge retention fanatics.

Thanks Man, I appreciate that.

I've been getting into whiskey and I really appreciate the experts helping me choose the right whiskey it's really put in perspective how nice it is to have people help out.

And that's the great thing about enthusiast communities, so much information that people willingly share. And as a brand ambassador for Maker's Mark I totally can appreciate your journey of brown happy human juice discovery!

Oh nice, I still wanna try some Cask Strength Makers Mark.

[Deadboxhero]

I figured my fellow edge geeks would appreciate some magnification.

I had YT up on the TV when you posted the video. Of course I clicked on it and caught myself saying out loud, "Look at his freakin' scratch pattern. D*** that Shawn!" Meant that in admiration of course.

The wife looks up from her book and says, "Huh? What scratches?" Then she glanced at the TV and muttered, "Oh knife stuff."

Lmao thanks man, haha you just might be an edge freek.

It seems like the the 30° scratch orientation facing backwards helps with drawing the edge in that direction in the rope, more "grip" and "bite"

[Deadboxhero]

Nicely done Shawn,

Hey Wanderer,

When I was training our salesmen to pitch the Sharpmaker, "back-in-the-day" (80's), I told the that I was number two teacher. Loupe was number one teacher.

sal

Well said

[Deadboxhero]

BBB and the ghost chasers, would you say that the V edge is better at push cuts than a convex?
It is my understanding that the convex edge is better for edge stability which I prefer but for EDC tasks, perhaps a V edge would be better. Next question is does stroping work better on a convex edge than a V edge? I have had good results with stroping on convex edges over V edges. This could be my methods and materials that need adjustment for a V edge. Perhaps strop a V edge on wood rather than leather? Muchos garcias for your replies.

Thicker equals more durability and reduced edge retention when used for pure cutting, thinner equals more cutting ability and more edge retention for pure cutting.

A thinner edge will strop back better because the apex radius doesn't blunt as thick as a thicker apex radius does with cutting wear. A less thick apex radius will respond better to stropping because stropping is an enhancer not a creator.

While there are endless arguments about differences between convexed and V edge yada yada and we could discuss every nuance and never agree. All that really matters is whatever you create, what makes the biggest difference is what's thicker and what's thinner at the apex.


So if you hear hoofbeats think horses not zebras cause if something is more durable than something else, it's probably just thicker geometry.

[Fireman]

Thank you BBB
Since MC is going to be mostly an EDC steel, the next question is edge stability to figure out how thin BTE we can go. I have two and will end up with three fixed blades and have to figure out how thin I will go. I’ll probably have three different edge profiles and use the one for the tasks that may be required of it. I am glad we have such a great resource in this community here of knife aficionados and pros.