MT46P Testing Thread

[Sterling454]

My FedEx guy just dropped off my MT46P and I couldn't be more excited to stay playing with it! A G10 scale kit and boltaron sheath showed up yesterday so I've got a complete setup to work with. Before we get into it, I want to give a caveat - this is my first time testing/reviewing anything and making my work public so I am for feedback to be gentle and constructive

I'm a stat/measurement nerd so some of this won't be news but I had fun compiling the the data

Initial measurements are as follows:

- 3.500" blade from tip to heel
- 0.118" blade stock @ spine and consistent through the tang, +/- 0.0005"
- 0.025" BTE @ tip and heel
- 0.028" BTE @ belly midpoint

- 2.7oz or 76g bare blade weight
- 4.7oz or 134g assembled weight with Spyderco G10 kit

Factory grind is a fairly consistent 18° per side as indicated by my very unscientific angle finder on a Work Sharp Precision Adjust Elite. I was pleased to see both sides were relatively symmetrical. Some of the other Spydercos I've bought had up to a 2° difference between sides (16° on one side and 18° on the other foot example).

Edge appears to be well ground with only the slightest burr on the front half of the blade. I don't know if Spyderco runs these across a strop before they go out the door but I'm sure it will be easy to touch up.

Initial slow push cutting through standard printer paper was lackluster, occasionally catching and mostly leaving fuzzy cuts.

That's all I have time for right now. I'm planning to strop out the burr before I start edge testing. I have a hefty supply of clean cardboard provided to me from a local appliance store. My intent is to list the type/weight/rating of the cardboard to keep the comparisons to other steels as apples-to-apples as I can.

P.S. I took my close-up pictures with the telephoto lens of a Samsung Galaxy S24 Ultra with a 4x zoom in pro mode to control focus and boosted the magnification with a 200x illuminated lens from Apexel.

[Actinolite]

Mine just arrived 5 minutes ago. I haven't been able to open it yet.

[MrMayhem]

Got mine as well. Making a paracord wrap as we speak

[Sterling454]

After running it across a 1200 grit diamond strop, the burr is gone and cutting clean printer paper much better now! The grind on the right side of the tip ended up being closer to 22° - I'll have to correct that when I reprofile to 17° for trying my own edge after the factory edge is done.

[Cycletroll]

My PE arrived today. Thank you Spyderco!
Very even grind @ .018 BTE.
LOVELY! Now to sharpen and see what she'll do. Hoping for s90v+ performance.

[Sterling454]

So, I'm 530 feet of corrugated cardboard into testing and have paused twice to strop 10 passes per side across a 2000 grit diamond strop. Out of the box, it was not shaving sharp ... but now it is The stropping maintenance is outpacing the wear that the cardboard is putting onto the edge. My Stretch 2 XL in K390 didn't come anywhere close to that!

[Sterling454]

1,200 feet of cardboard cuts with 10 passes across the same 2000 grit diamond strop and..... It's still shaving sharp! I'm blown away....

[Red Leader]

Since my sharpening setup isn’t that great right now, I figure I’d start my testing on corrosion resistance. Spyderco probably has loads of information on this already, but lets add to the pool.

I needed to cut up a pinapple, so lets start here, something low key.



Just to get a better baseline of what pineapple was capable of with its acidity, I figured I’d throw in my K390 LJ as somewhat of a control to test against. Is Magnamax the ‘stainless K390’? Let us compare these two for the test.







…which may have been a mistake lol






They will sit like this overnight and we will see how they do.

[Bolster]

They will sit like this overnight and we will see how they do.

Yikes! Here's hoping you and your knives all the best, with this risky test!

[idrisdroid]

They will sit like this overnight and we will see how they do.

clean the edge of the K390 at least,
that edge can be ruined if it corrode deeply right?

[sal]

Hi Idrisdroid,

Welcome to our forum.

The edge dies (goes dull or rusts) and is reborn (sharpened).

sal

[Bolster]

I don't have a MagnaMax mule (yet), but I'm a little hazy on the MagnaMax Mule stats. This is what I have assumed by reading around, can the forum please correct any errors found below?

Mule Rc hardness around 63+?
MagnaMax has CATRA in the 700-750 range?
MagnaMax toughness somewhere in the 7-10 ft lb range?
Corrosion resistance somewhere in the S90V range?

[idrisdroid]

Hi Idrisdroid,

Welcome to our forum.

The edge dies (goes dull or rusts) and is reborn (sharpened).

sal

hi Sal,
a pleasure and honor to get my first message From you!
i was worried to get deep pitting, and shorten lifetime of the knife
but maybe it's interesting to see what happen to the edge with that pineapple?

[Sterling454]

2,827 feet of cardboard cutting and I'm still on the factory edge, cutting printer paper cleanly with only basic stropping maintenance. I'm almost bored trying to find the limit of when this edge will stop stropping back. My hat is off to Pete (Cedric & Ada) for his forearm strength & sheer tenacity pushing this steel to its limits. Maybe I shouldn't have stropped lol.....

[Sterling454]

I don't have a MagnaMax mule (yet), but I'm a little hazy on the MagnaMax Mule stats. This is what I have assumed by reading around, can the forum please correct any errors found below?

Mule Rc hardness around 63+?
MagnaMax has CATRA in the 700-750 range?
MagnaMax toughness somewhere in the 7-10 ft lb range?
Corrosion resistance somewhere in the S90V range?

I will gladly be wrong but I'm not aware of any publicized or even informal stats for any of the questions you posed. I've heard MagnaMax likened to "stainless K390", "S110V edge retention with S35VN toughness" and "10V edge retention with double S90V's toughness " but no actual stats, just analogies. I would love to see some actual figures - maybe hardness testing from CBRx or Shawn?

[Red Leader]

Sorry for the delay.


Since it is being called the ‘stainless K390’ I thought it would be fun to test that.

Here are the results from my pineapple test (overnight):







So far, for the initial test, I am pretty impressed. Salt water dunk next? Burying in the backyard for a week?

[Red Leader]

I don't have a MagnaMax mule (yet), but I'm a little hazy on the MagnaMax Mule stats. This is what I have assumed by reading around, can the forum please correct any errors found below?

Mule Rc hardness around 63+?
MagnaMax has CATRA in the 700-750 range?
MagnaMax toughness somewhere in the 7-10 ft lb range?
Corrosion resistance somewhere in the S90V range?

I will gladly be wrong but I'm not aware of any publicized or even informal stats for any of the questions you posed. I've heard MagnaMax likened to "stainless K390", "S110V edge retention with S35VN toughness" and "10V edge retention with double S90V's toughness " but no actual stats, just analogies. I would love to see some actual figures - maybe hardness testing from CBRx or Shawn?

Agreed. If we are testing, it would be good to know where we are starting. I’m looking forward to the stats.

[Jeb]

I knew that pineapple would really get after that K390...

[Emerson]

My Magnamax mule was super easy to put a new edge on. The edge was ok out of the box. It was super toothy with a slight burr and a multi angle bevel on both sides. I was lazy and didn't completely clean up the old edge bevel but set it to 17 degrees top to bottom. I was able to get a great burr at 400 grit quickly and finished it off with 800 grit diamond plate. The burr came off quickly with both grits and I was left with one of if not the sharpest spydercos I own. I'll be interested to see how long it lasts compared to my 15v mule.

[Infinite Zero]

Mine has a decent edge out of the box. Speaking of the box, it made quick work of shredding it and still cuts paper.

I think I’ll take it boating next.