PM2 in S90V or 15V?

[stillshot2]

I'm pretty sure he's going to say his own personal 15V haha

 

[DeadboxHero]

I'm pretty sure he's going to say his own personal 15V haha

Bingo, It's the only production stuff I like.

I really enjoyed having it in my pocket since 2022.

 

[kasumi]

Bingo, It's the only production stuff I like.

I really enjoyed having it in my pocket since 2022.

Haha…. What else…! We have something in common
Will you or were you involved in the heat treat protocol for MagnaCut for Spyderco as well Shawn?

 

[DeadboxHero]

Haha…. What else…! We have something in common
Will you or were you involved in the heat treat protocol for MagnaCut for Spyderco as well Shawn?

Yes, that was back in 2022, I did it for free to show my appreciation and gratitude to Spyderco, especially since I was so very demanding with how the 15V needed to be done.

While the MagnaCut heat treatment can be hot rodded for custom, small batch knives to focus only on hardness the overall spirit of MagnaCut's design by Dr Larrin was for excellent overall balance.

Magnacut bridged the gap that was thought to be impossible between pm tool steel and stainless pm steel with the additional bonus of being extremely corrosion resist.

Its metallurgical design could only have come from a generational talent that required extreme knowledge and outside the box thinking followed by application of how things actually worked versus regurgitation.

We have to remember this is essentially just a "stainless CPM 4V" which also wasn't a edge retention monster either; even if it was at a blisteringly high hardnesses. Most of the social media influencers didn't address that.

4v was prized not for edge retention but for being the nexus of strength and toughness that was thought to be impossible for a stainless to ever come close to.

So, both Magnacut and 4v have the same carbide volume; there's only so much 8% volume can do even if it is some of the hardest carbide types you could use to make up that volume.

The work was done with Spyderco to optimize that balance yet the working hardness of MagnaCut still trended harder than S30V, S35VN and S45VN but with the benefit of superior corrosion resistance, toughness sharpness ability and edge stability at a cost to some wear resistance which we see expressed in the overall endurance of the working edge.

Some folks like it when the edges break down rougher and can keep grabbing and draw cutting even though the effortless push cutting is done.

Magnacut seems to break down smoother when it begins to dull which is a hallmark of its toughness but for some they felt like it needed to be harder so that the edge would break down more raggedly and continue cutting.

Imho, I think you would just use a different steel for a production knife if working edge endurance is what's most important.



Now it's 2026 and we have a high edge retention version which is to be a stainless k390 utilizing the same innovation.

MagnaMax.

That will be a very exciting addition to the Magna family of steels both designed to do different things and be different things to different people.

Should be available around Blade Show Atlanta 2026

 

[kasumi]

Yes, that was back in 2022, I did it for free to show my appreciation and gratitude to Spyderco, especially since I was so very demanding with how the 15V needed to be done.

While the MagnaCut heat treatment can be hot rodded for custom, small batch knives to focus only on hardness the overall spirit of MagnaCut's design by Dr Larrin was for excellent overall balance.

Magnacut bridged the gap that was thought to be impossible between pm tool steel and stainless pm steel with the additional bonus of being extremely corrosion resist.

Its metallurgical design could only have come from a generational talent that required extreme knowledge and outside the box thinking followed by application of how things actually worked versus regurgitation.

We have to remember this is essentially just a "stainless CPM 4V" which also wasn't a edge retention monster either; even if it was at a blisteringly high hardnesses. Most of the social media influencers didn't address that.

4v was prized not for edge retention but for being the nexus of strength and toughness that was thought to be impossible for a stainless to ever come close to.

So, both Magnacut and 4v have the same carbide volume; there's only so much 8% volume can do even if it is some of the hardest carbide types you could use to make up that volume.

The work was done with Spyderco to optimize that balance yet the working hardness of MagnaCut still trended harder than S30V, S35VN and S45VN but with the benefit of superior corrosion resistance, toughness sharpness ability and edge stability at a cost to some wear resistance which we see expressed in the overall endurance of the working edge.

Some folks like it when the edges break down rougher and can keep grabbing and draw cutting even though the effortless push cutting is done.

Magnacut seems to break down smoother when it begins to dull which is a hallmark of its toughness but for some they felt like it needed to be harder so that the edge would break down more raggedly and continue cutting.

Imho, I think you would just use a different steel for a production knife if working edge endurance is what's most important.



Now it's 2026 and we have a high edge retention version which is to be a stainless k390 utilizing the same innovation.

MagnaMax.

That will be a very exciting addition to the Magna family of steels both designed to do different things and be different things to different people.

Should be available around Blade Show Atlanta 2026

Thanks for this great piece of history and explanation behind magnacut . Will you work with Spyderco on their heat treatment for Magna Max as well?

 

[DeadboxHero]

Thanks for this great piece of history and explanation behind magnacut . Will you work with Spyderco on their heat treatment for Magna Max as well?

No, my main contribution was to collaborate with the 15V.

While it is unfortunate that Crucible Industries LLC is gone and the material sunsets with their closure I am happy that there will be enough left for my collaboration folding knife design that I sent to Sal back in 2019, which is what set all this into motion.

Thanks again for the interest and enthusiasm.

I am very grateful for it.

 

[kasumi]

No, my main contribution was to collaborate with the 15V.

While it is unfortunate that Crucible Industries LLC is gone and the material sunsets with their closure I am happy that there will be enough left for my collaboration folding knife design that I sent to Sal back in 2019, which is what set all this into motion.

Thanks again for the interest and enthusiasm.

I am very grateful for it.

Yes your 15V contribution draw me recently into my third 15V blade and made me switch to Spyderco brand for now. Thanks a lot for your work and enthusiasm as well!