I did not get one to test. This was just a sample Spyderco with sharing at the show.WilliamMunny wrote: ↑Mon Jan 27, 2025 2:44 pmIf you got a prototype Mule to test, then your involved, even if it's just actionable feedback. It looks like you already put micro bevel on from stropping.Deadboxhero wrote: ↑Mon Jan 27, 2025 12:05 pmNo, I have not been involved.
I'm sure you guys will still enjoy it.
Not trying to be insensitive, but before CPM stops production, I hope Spyderco was able to get enough steel for a Mule run for the rest of us, if not it might be a while until we see them.
CPM Prototype Steel
- Deadboxhero
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Re: CPM Prototype Steel
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Re: CPM Prototype Steel
Sorry, just assumed you might have been given the chance to play around with one for feedback.Deadboxhero wrote: ↑Mon Jan 27, 2025 3:11 pmI did not get one to test. This was just a sample Spyderco with sharing at the show.WilliamMunny wrote: ↑Mon Jan 27, 2025 2:44 pmIf you got a prototype Mule to test, then your involved, even if it's just actionable feedback. It looks like you already put micro bevel on from stropping.Deadboxhero wrote: ↑Mon Jan 27, 2025 12:05 pmNo, I have not been involved.
I'm sure you guys will still enjoy it.
Not trying to be insensitive, but before CPM stops production, I hope Spyderco was able to get enough steel for a Mule run for the rest of us, if not it might be a while until we see them.
Endura AUS-8, Manix 2 S30V, Manix 2 LW MagnaCut, BBB 15V Manix 2, BBB 15V Para 3 LW, Alcyone BD1N, PM2 Micarta Cruwear, Native 5 Maxamet (2nd), Para 3 Maxamet (2nd), Magnacut Mule, Z-Wear Mule, REC Para 3 10V Satin, Dragonfly Salt 2, GB2 M4, Pacific Salt SE H2, Dragon Fly SE H2, Endela K390 PE, Chaparral SE XHP, Shaman Micarta XHP, Bodacious SPY27, Manix 2 LW 15v, Sage 5 REX-121 LW.
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Re: CPM Prototype Steel
No worries, I've been busy playing with my own steel samples.WilliamMunny wrote: ↑Mon Jan 27, 2025 4:05 pmSorry, just assumed you might have been given the chance to play around with one for feedback.Deadboxhero wrote: ↑Mon Jan 27, 2025 3:11 pmI did not get one to test. This was just a sample Spyderco with sharing at the show.WilliamMunny wrote: ↑Mon Jan 27, 2025 2:44 pmIf you got a prototype Mule to test, then your involved, even if it's just actionable feedback. It looks like you already put micro bevel on from stropping.Deadboxhero wrote: ↑Mon Jan 27, 2025 12:05 pm
No, I have not been involved.
I'm sure you guys will still enjoy it.
Not trying to be insensitive, but before CPM stops production, I hope Spyderco was able to get enough steel for a Mule run for the rest of us, if not it might be a while until we see them.
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Re: CPM Prototype Steel
What type of steel samples have you been testing out? 15v was pretty amazing, love to hear about what you are working on.Deadboxhero wrote: ↑Mon Jan 27, 2025 4:40 pmNo worries, I've been busy playing with my own steel samples.WilliamMunny wrote: ↑Mon Jan 27, 2025 4:05 pmSorry, just assumed you might have been given the chance to play around with one for feedback.Deadboxhero wrote: ↑Mon Jan 27, 2025 3:11 pmI did not get one to test. This was just a sample Spyderco with sharing at the show.WilliamMunny wrote: ↑Mon Jan 27, 2025 2:44 pm
If you got a prototype Mule to test, then your involved, even if it's just actionable feedback. It looks like you already put micro bevel on from stropping.
Not trying to be insensitive, but before CPM stops production, I hope Spyderco was able to get enough steel for a Mule run for the rest of us, if not it might be a while until we see them.
Endura AUS-8, Manix 2 S30V, Manix 2 LW MagnaCut, BBB 15V Manix 2, BBB 15V Para 3 LW, Alcyone BD1N, PM2 Micarta Cruwear, Native 5 Maxamet (2nd), Para 3 Maxamet (2nd), Magnacut Mule, Z-Wear Mule, REC Para 3 10V Satin, Dragonfly Salt 2, GB2 M4, Pacific Salt SE H2, Dragon Fly SE H2, Endela K390 PE, Chaparral SE XHP, Shaman Micarta XHP, Bodacious SPY27, Manix 2 LW 15v, Sage 5 REX-121 LW.
Re: CPM Prototype Steel
I ended up getting one of the Bradfords secondhand at a good price. Didn’t get to test the hardness but did reprofile (bad factory grind) and will test it out once my hand gets better (broken metacarpal). I’m looking forward to seeing how it performs even with a different heat treatment. Kind of tempted to use an XRF to see the composition but don’t want to ruin the surprise for myself or others when Dr. Larrin finalizes the recipe.Red Leader wrote: ↑Mon Jan 27, 2025 2:12 pmDid Eric share any info about hardness on the Spydie sample? I was reading about how Bradford got a sample of this steel and turned it into some knives and sold them, but at least one test was popping up around 61-62 on the Bradford. Curious to see what this sample is run at.
Re: CPM Prototype Steel
You can take my money right now if the hunting knife you made somehow ends up as a Spyderco sprint run or production model.Deadboxhero wrote: ↑Mon Jan 27, 2025 4:40 pmNo worries, I've been busy playing with my own steel samples.

Re: CPM Prototype Steel
Iv'e ben testing a Mule for a few months now. I use it every day for anything that I need to cut. Food prep, table knife, box cutter, mail opener, etc. Some fibrous, some plant work. I've been quite impressed with it. I haven't had a chance to drop it in Salt water yet, but that's planned. Also our R&D crew has been lab testing the alloy.
I just sharpened it for the first time a few days ago. Came up very nicely. Both Larrin and Crucible are to be commended. A new beautiful Blade Alloy for those of us that are into that.
Anyone hear any more about Crucible?
sal
I just sharpened it for the first time a few days ago. Came up very nicely. Both Larrin and Crucible are to be commended. A new beautiful Blade Alloy for those of us that are into that.
Anyone hear any more about Crucible?
sal
Re: CPM Prototype Steel
Hey RutyIron,
That's Exquisite! You have a talent. I've shared the poem with some of our crew. Hope you don't mind. I gave you credit. If Crucible makes it and we're promoting it, we may need to look you up?
You've been around for a while and have an idea what Spyderco is all about. Would you be interested in creating a poem about Spyderco?
sal
That's Exquisite! You have a talent. I've shared the poem with some of our crew. Hope you don't mind. I gave you credit. If Crucible makes it and we're promoting it, we may need to look you up?
You've been around for a while and have an idea what Spyderco is all about. Would you be interested in creating a poem about Spyderco?
sal
Re: CPM Prototype Steel
Can I help with a few lines? 
The steel was light, the shine was bright, as I started sharpening my spyderco tonight.
The edge was keen, as I wiped the blade clean, on my spydie Mule Team.
The steel was light, the shine was bright, as I started sharpening my spyderco tonight.
The edge was keen, as I wiped the blade clean, on my spydie Mule Team.
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Re: CPM Prototype Steel
Oh, Sal.
I seem to have gone and embarrassed myself... again. While it's true that I sometimes use my vocabulary to turn my thoughts into awkward prose, or my lathe to turn my ideas into functioning machines, that poem isn't entirely my own creation.
You know how you might get a new knife, so for the next week you're in the kitchen cutting up breakfast, lunch, and dinner? Or maybe a new camera on your phone, so you find yourself shooting everything that you come across throughout your day? Well I found a new tool that I've become enamored with, and they call it AI. It's been great for helping direct me to the answers to technical questions. But it's also a fun toy for goofy stuff, like drawing pictures or writing "fluff" articles.
When I was sitting here thinking about how "Proto-X" sounded like a cool name for a knife steel or 80's New Wave Band, it occurred to me that it might be fun to tell the AI to write a poem about it. I gave the AI a single-sentence request, and the poem you read was the result. I don't think I'm guilty of plagiarism, but I don't think I can take credit for the writing. But if it brought a little cheer to you or the other folks at Spyderco, then I'm unapologetic and happy.
Enjoy your Tuesday!
Rob
- WilliamMunny
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Re: CPM Prototype Steel
Don't worry I told AI to send me a CPM-PROTO-X Mule, it didn't work, but those images that came up... that poor animal.RustyIron wrote: ↑Tue Jan 28, 2025 10:14 am
Oh, Sal.
I seem to have gone and embarrassed myself... again. While it's true that I sometimes use my vocabulary to turn my thoughts into awkward prose, or my lathe to turn my ideas into functioning machines, that poem isn't entirely my own creation.
You know how you might get a new knife, so for the next week you're in the kitchen cutting up breakfast, lunch, and dinner? Or maybe a new camera on your phone, so you find yourself shooting everything that you come across throughout your day? Well I found a new tool that I've become enamored with, and they call it AI. It's been great for helping direct me to the answers to technical questions. But it's also a fun toy for goofy stuff, like drawing pictures or writing "fluff" articles.
When I was sitting here thinking about how "Proto-X" sounded like a cool name for a knife steel or 80's New Wave Band, it occurred to me that it might be fun to tell the AI to write a poem about it. I gave the AI a single-sentence request, and the poem you read was the result. I don't think I'm guilty of plagiarism, but I don't think I can take credit for the writing. But if it brought a little cheer to you or the other folks at Spyderco, then I'm unapologetic and happy.
Enjoy your Tuesday!
Rob

Endura AUS-8, Manix 2 S30V, Manix 2 LW MagnaCut, BBB 15V Manix 2, BBB 15V Para 3 LW, Alcyone BD1N, PM2 Micarta Cruwear, Native 5 Maxamet (2nd), Para 3 Maxamet (2nd), Magnacut Mule, Z-Wear Mule, REC Para 3 10V Satin, Dragonfly Salt 2, GB2 M4, Pacific Salt SE H2, Dragon Fly SE H2, Endela K390 PE, Chaparral SE XHP, Shaman Micarta XHP, Bodacious SPY27, Manix 2 LW 15v, Sage 5 REX-121 LW.
Re: CPM Prototype Steel
RustyIron wrote: ↑Tue Jan 28, 2025 10:14 am
Oh, Sal.
I seem to have gone and embarrassed myself... again. While it's true that I sometimes use my vocabulary to turn my thoughts into awkward prose, or my lathe to turn my ideas into functioning machines, that poem isn't entirely my own creation.
You know how you might get a new knife, so for the next week you're in the kitchen cutting up breakfast, lunch, and dinner? Or maybe a new camera on your phone, so you find yourself shooting everything that you come across throughout your day? Well I found a new tool that I've become enamored with, and they call it AI. It's been great for helping direct me to the answers to technical questions. But it's also a fun toy for goofy stuff, like drawing pictures or writing "fluff" articles.
When I was sitting here thinking about how "Proto-X" sounded like a cool name for a knife steel or 80's New Wave Band, it occurred to me that it might be fun to tell the AI to write a poem about it. I gave the AI a single-sentence request, and the poem you read was the result. I don't think I'm guilty of plagiarism, but I don't think I can take credit for the writing. But if it brought a little cheer to you or the other folks at Spyderco, then I'm unapologetic and happy.
Enjoy your Tuesday!
Rob
Hi Rusty Iron,
Thanx for setting the record straight. Please do not ask AI to write a poem about Spyderco. I prefer humans to do that.
thanx,
sal
Re: CPM Prototype Steel
Although you asked Rusty Iron not to have AI create a poem, you didn’t ask me not to!sal wrote: ↑Wed Jan 29, 2025 6:16 pmRustyIron wrote: ↑Tue Jan 28, 2025 10:14 am
Oh, Sal.
I seem to have gone and embarrassed myself... again. While it's true that I sometimes use my vocabulary to turn my thoughts into awkward prose, or my lathe to turn my ideas into functioning machines, that poem isn't entirely my own creation.
You know how you might get a new knife, so for the next week you're in the kitchen cutting up breakfast, lunch, and dinner? Or maybe a new camera on your phone, so you find yourself shooting everything that you come across throughout your day? Well I found a new tool that I've become enamored with, and they call it AI. It's been great for helping direct me to the answers to technical questions. But it's also a fun toy for goofy stuff, like drawing pictures or writing "fluff" articles.
When I was sitting here thinking about how "Proto-X" sounded like a cool name for a knife steel or 80's New Wave Band, it occurred to me that it might be fun to tell the AI to write a poem about it. I gave the AI a single-sentence request, and the poem you read was the result. I don't think I'm guilty of plagiarism, but I don't think I can take credit for the writing. But if it brought a little cheer to you or the other folks at Spyderco, then I'm unapologetic and happy.
Enjoy your Tuesday!
Rob
Hi Rusty Iron,
Thanx for setting the record straight. Please do not ask AI to write a poem about Spyderco. I prefer humans to do that.
thanx,
sal

Spyderco and Sal Glesser the Knife Pimp
In the realm of blades so fine,
Where every cut aligns,
There stands a man, a knife pimp divine,
Sal Glesser, the king of design.
From Golden, Colorado’s embrace,
Spyderco's fame did not race,
But leap and bound, a global chase,
With pocket clips and serrated grace.
His knives, a symphony of steel,
In every hand, a story to feel,
From Para 3 to Bodacious deal,
Each one a masterpiece, a tale.
The pocket clip, a signature sign,
A hole round, not just a design,
For one-handed flip, a sign,
Of innovation, a timeless find.
Sal Glesser, the world’s knife pimp,
Crafts blades that make hearts skip,
In every pocket, a trusty grip,
Spyderco’s legacy, a timeless trip.
So here’s to Sal, the knife pimp true,
And Spyderco, the brand we pursue,
In every cut, a dream come through,
A testament to what we can do.
Re: CPM Prototype Steel
^ How about a separate "Assemblage of words that rhyme" thread.
Steel novice who self-identifies as a steel expert. Proud M.N.O.S.D. member 0003. Spydie Steels: 4V, 15V, 20CV, AEB-L, AUS6, Cru-Wear, HAP40, K294, K390, M4, Magnacut, S110V, S30V, S35VN, S45VN, SPY27, SRS13, T15, VG10, XHP, ZWear, ZDP189
Re: CPM Prototype Steel
Thanx Rinzler,
I'm humbled.
sal
I'm humbled.
sal
Re: CPM Prototype Steel
That's pretty good lol.Rinzler wrote: ↑Wed Jan 29, 2025 8:11 pmAlthough you asked Rusty Iron not to have AI create a poem, you didn’t ask me not to!sal wrote: ↑Wed Jan 29, 2025 6:16 pmRustyIron wrote: ↑Tue Jan 28, 2025 10:14 am
Oh, Sal.
I seem to have gone and embarrassed myself... again. While it's true that I sometimes use my vocabulary to turn my thoughts into awkward prose, or my lathe to turn my ideas into functioning machines, that poem isn't entirely my own creation.
You know how you might get a new knife, so for the next week you're in the kitchen cutting up breakfast, lunch, and dinner? Or maybe a new camera on your phone, so you find yourself shooting everything that you come across throughout your day? Well I found a new tool that I've become enamored with, and they call it AI. It's been great for helping direct me to the answers to technical questions. But it's also a fun toy for goofy stuff, like drawing pictures or writing "fluff" articles.
When I was sitting here thinking about how "Proto-X" sounded like a cool name for a knife steel or 80's New Wave Band, it occurred to me that it might be fun to tell the AI to write a poem about it. I gave the AI a single-sentence request, and the poem you read was the result. I don't think I'm guilty of plagiarism, but I don't think I can take credit for the writing. But if it brought a little cheer to you or the other folks at Spyderco, then I'm unapologetic and happy.
Enjoy your Tuesday!
Rob
Hi Rusty Iron,
Thanx for setting the record straight. Please do not ask AI to write a poem about Spyderco. I prefer humans to do that.
thanx,
sal![]()
Spyderco and Sal Glesser the Knife Pimp
In the realm of blades so fine,
Where every cut aligns,
There stands a man, a knife pimp divine,
Sal Glesser, the king of design.
From Golden, Colorado’s embrace,
Spyderco's fame did not race,
But leap and bound, a global chase,
With pocket clips and serrated grace.
His knives, a symphony of steel,
In every hand, a story to feel,
From Para 3 to Bodacious deal,
Each one a masterpiece, a tale.
The pocket clip, a signature sign,
A hole round, not just a design,
For one-handed flip, a sign,
Of innovation, a timeless find.
Sal Glesser, the world’s knife pimp,
Crafts blades that make hearts skip,
In every pocket, a trusty grip,
Spyderco’s legacy, a timeless trip.
So here’s to Sal, the knife pimp true,
And Spyderco, the brand we pursue,
In every cut, a dream come through,
A testament to what we can do.
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Re: CPM Prototype Steel
Oh my. So I've been making knives out of MagnaCut since the first heat, mostly kitchen knives and some hunters. One of my favorite steels of late is K390. A new steel from Larrin that is a stainless version of K390?? Now that does have my interest. I've been looking at K390 to make some knives from but I think I might hold off until this new steel is available.
I'd definitely be in for a mule in it.
I'd definitely be in for a mule in it.
Delica 4 Flat Ground Carbon Fiber HAP40/SUS410 Exclusive
Para Military 2 Maxamet
Endura 4 Lightweight - Blue FRN - K390 - Wharncliffe
Sage 5 Lighweight Salt MagnaCut
Sage 5 REX 121
Military 2 CPM-15V BBB Sprint
Para Military 3 CPM-15V BBB Sprint
2 T15 Mules
2 K294 Mules
1 VG XEOS Mule
Para Military 2 Maxamet
Endura 4 Lightweight - Blue FRN - K390 - Wharncliffe
Sage 5 Lighweight Salt MagnaCut
Sage 5 REX 121
Military 2 CPM-15V BBB Sprint
Para Military 3 CPM-15V BBB Sprint
2 T15 Mules
2 K294 Mules
1 VG XEOS Mule
- Deadboxhero
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Re: CPM Prototype Steel
CPM Prototype/ProtoX
Color Metallography by Shawn Houston

Light Blue/blue: Vanadium and niobium carbides (MX) at 17% Volume at ~1-3um sizes.
Beige: Matrix of tempered martensite and some prior austenite grain boundaries.
Color Metallography by Shawn Houston

Light Blue/blue: Vanadium and niobium carbides (MX) at 17% Volume at ~1-3um sizes.
Beige: Matrix of tempered martensite and some prior austenite grain boundaries.
Re: CPM Prototype Steel
I will say, after months of use, that's it's very nice. Thanx Larrin.
sal
sal