Random Thought Thread

Jason didn't want to carry a Shiv in Afghanistan. Too long, the handle was too thick (didn't pack flat), and I think professional soldiers don't want to carry something flashy because it might look mall ninja to the other guys, so that's where the UF came from. I mean, who needs a big fighter when you're carrying an M4. He was going to use his Shiv for hog hunting but not on deployment. He was pretty adamant about 5-7".
 
yoko said:
Beer fridges are a bad thing for me


I'll end up waking up in Canada in a wolverine costume that's four sizes too small.....

Ask me how I know...


Hahaha
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yoko is the man!

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Blues said:
I'm considering giving the kid another chance and placing him on double secret probation. I've sent him a PM letting him know that he'll have one chance and one chance only if he is allowed back in. (Conditional upon reading more, posting less, and not insulting other members by presuming to know more than they do about their chosen fields and professions.)

Those of you who are in favor, please post or give a like. If you are not, speak up here or via PM.

Where's Rusty the bailiff when I need him?

Okay, let's hear from you, publicly or privately.

E
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Yes, please.
 
nandok said:
Yes, please.
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just read the rest of the thread, thank you.
JohnBarleycorn said:
I'm new here, compared to most. Not my first rodeo, by any means, however, and I know it's easy to step into an established community and shoot yourself in the foot. When that happens, a little humility goes a long way in setting things right. I have seen no humility, only arrogance and aggressive responses from the subject in question, and if he isn't allowed back, it's okay by me, since I saw very little to nothing of value in his posts. I think his chances of success in this community are limited; along the way, some training I received pointed out that there are three types of people: those that learn by their mistakes, those that learn by other's mistakes, and those that don't learn. My money is on the latter category for this subject.

I hope I don't end up getting flamed or banned from this post, I'm just taking up Blues Blues on his offer to voice an opinion, and this is mine. I would expect others to have differing opinions, and I'm good with that.
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"Humility" is definitely the operative word here.
 
vkp78 said:
Nathan how far off from D3V are these?
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Those were a low temp tweak that preceded Delta. It was pretty good. It was really good. But it would take some damage in that nail chop at 20 DPS that is largely gone now. I had to move my test samples to 18 DPS after Delta. But it was waaay better than using the secondary hardening hump.

After that run of Shivs we ran into an issue with the material condition of the 3V itself. With my background in prequenching D2 I thought that would be the answer (and it was but it wasn't) and the actual issue ended up being an issue that could be resolved with normalizing (I'm abusing that term here) rather than prequenching. Austenitizing from an already martensitic matrix worked, but for the wrong reasons and is fraught with risks that I understand better now. Our material is less spheroidized and there are some additional steps added to the process. But, to answer your question, yes those early tweaks performed (as you can see) but were not always as consistent and were never as good as the finalized protocol.

Another issue could actually have something to do with the compaction of the material itself. Despite what they tell you about the benefits of particle metallurgy (it is not inherently cleaner or finer grained, those are misconceptions), its real purpose is (mostly) to create alloys that simply aren't possible with a conventional melt *. Building steel from particle doesn't inherently improve it and (like damascus) can actually cause issues if not performed perfectly. We still test constantly. For whatever reason, the performance of our work is currently stronger than it was when we first started with it (and this is true of current materials I've given the industry HT to also) and I can only speculate that Crucible has tweaked something in their process and not publicized it.

EDIT:

*the PM process allows the steel to solidify in seconds rather than hours. This solves the problem of carbide forming elements like Vanadium falling from solution waaay before the rest of the melt solidifies. It also makes smaller (and rounder) carbides in conventional alloys rending the steel more ductile at a given hardness. This spoils D2 in a knife.
 
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Nathan the Machinist said:
Those were a low temp tweak that preceded Delta. It was pretty good. It was really good. But it would take some damage in that nail chop at 20 DPS that is largely gone now. I had to move my test samples to 18 DPS after Delta. But it was waaay better than using the secondary hardening hump.

After that run of Shivs we ran into an issue with the material condition of the 3V itself. With my background in prequenching D2 I thought that would be the answer (and it was but it wasn't) and the actual issue ended up being an issue that could be resolved with normalizing (I'm abusing that term here) rather than prequenching. Austenitizing from an already martensitic matrix worked, but for the wrong reasons and is fraught with risks that I understand better now. Our material is less spheroidized and there are some additional steps added to the process. But, to answer your question, yes those early tweaks performed (as you can see) but were not always as consistent and were never as good as the finalized protocol.

Another issue could actually have something to do with the compaction of the material itself. Despite what they tell you about the benefits of particle metallurgy (it is not inherently cleaner or finer grained, those are misconceptions), its real purpose is (mostly) to create alloys that simply aren't possible with a conventional melt *. Building steel from particle doesn't inherently improve it and (like damascus) can actually cause issues if not performed perfectly. We still test constantly. For whatever reason, the performance of our work is currently stronger than it was when we first started with it (and this is true of current materials I've given the industry HT to also) and I can only speculate that Crucible has tweaked something in their process and not publicized it.


*the PM process allows the steel to solidify in seconds rather than hours. The solves the problem of carbide forming elements like Vanadium falling from solution waaay before the rest of the melt solidifies. It also makes smaller (and rounder) carbides in conventional alloys rending the steel more ductile at a given hardness
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Love it when you make me feel dumb!

 
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