Z-FiNit?

Try asking damasteel about us dealer for nitrobe, I assume importing it from Europe
would be super expensive.

Also to my knowledge 4mm thickness is not currently available only 3,2mm x 38mm.
I pretty much bought some of the last flatbars as leftovers at stores " )
Damasteel says they can produce it if the inquiry will be sufficient,
but its not gonna happen soon..

When it comes to ht for best corrosion resistance need to temper at no more than 200C
but for that deep cryo w liquid nitrogen is needed. Personally I would do 2 tempers
with one cryo in between except the one after quench.

At multiple high tempers I dont believe corrosion resistance can be close to low temper,
even they say it will only slightly decrease. But definitely u can get harder
and with less retained austenite.

So far I have one fixed blade after the ht measured at 61HRC (1065C and 3x500C)
It is decent even without liquid nitrogen with only freezer at -20C and because
it is gonna be a fulltang fixed and the stock isnt really thick I wanted it to be a bit tougher.
Des Horn is making it 63HRC for folding knives.

www.instagram.com/jscuttingtools

I would to use nitrobe 77 but as you stated all things above........ really anymore I am a true hobbyist maker now, guess I was before as well since I didnt make a living doing it but I digress.

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Quote
KWB
I would to use nitrobe 77 but as you stated all things above........ really anymore I am a true hobbyist maker now, guess I was before as well since I didnt make a living doing it but I digress.

Well, at pht they should be able to get it to 62+ HRC without difficulties I believe.
With cryo to -80C and three high tempers it gets to that hardness.
But I think they can freeze deeper..

Later this year I will be buying some thinner stock for the folder I am designing currently..
I can send you a piece for a knife when I will be sending a package to US.
This steel isnt that crazy costy where I get it from 3,2x38mm is the only dimmension
available and 1cm of length is 1,8 euros that makes it about 46euros for 10inch long.
The shipping would be just a fraction as it would be together w other stuff and then
us shipping from my friend would be cheap. So yea maybe 70usd for 10inch piece
You can ask me after a few months to remind me. "D late summer I hope I will be
making a folder..

www.instagram.com/jscuttingtools

Ill have to give that some consideration. Thank you for the offer.

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Quote
KWB
Ill have to give that some consideration. Thank you for the offer.

I dont know damasteel dealers in the US but any of them shouldnt have
a problem to order one flatbar of nitrobe if You will write them an inquiry. "

www.instagram.com/jscuttingtools

from damasteel web:

Jantz Supply
Email jantz@jantzusa.com
Phone +1 580 369 2316

Midwest Knifemakers Supply
Tracy Mickley
Email info@usaknifemaker.com
Phone +1 507-720-6063

RW Wilson Knives
RW Wilson
Email rwknives@comcast.net
Phone +1 304-723-2771

Tru-Grit, Inc.
Email trugritinc@gmail.com
Phone +1 909-923-4116

American Metal Xchange Inc
(distributor of round bars)
Email george@amxinc.com
Phone +1 562-416-9511

Sb Specialty Metals LLC.
(distributor of DAMASTEEL® RWL34™Martensitic steel sheets)
Phone +1 800-365-1116

www.instagram.com/jscuttingtools

I recently had a food production facility contact me about making knives for them. After seeing the plant and seeing what they cut mostly easy stuff plastics and cardboard. I am wondering what blade design would best suit them. The knives the currently have are now are essentially 1in rubber handle butter knives. They stated they would prefer 2in to 3in blade.

Thinking of a sheepsfoot tip in either a karambit recurve of straight blade serrated with a large guard and 1/16 in stock.

I am thinking this is where z-finit may actually be beneficial

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Man, I would love to see some actual drawings of the designs you have in mind.

[www.instagram.com] really not sure yet, but it needs to cut like a laser but also have lateral stability so make the blade wider instead of increase stock thickness. The back end of the handle is meh, but I have to have an easy accessible handle to fit all hand sizes.

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[www.instagram.com] curious if this could happen due to a blade being dropped, was told the height was 4 ft. The steel is z-finit, ht pht. Stock is .140

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KWB,
Do you know if it landed on something hard? Maybe if the spine or a serration hit the corner of something? Or a fault in the metal?

---------------------------------------------------------
Stone Sharp Edges
[www.youtube.com] [www.facebook.com] [www.instagram.com]

"I am still discussing issues of steels and performance at this stage.

-Cliff"

"Roman Landes said:
Cause geometry cuts, .....steel determines the level and the duration"

The details are fairly blurry, was told it just dropped.

Contact 570-486-9095

Interesting opportunity


From just videos I saw I think this means the blade is brittle,
but I dont know how to do the math
Who knows how to do the math?
Impact Force
Stock is .140
Height is 4 foot
?? 8.5" overall length, 4.25" blade, 3 3/4" sharpened
?? Weight 180 grams or 0.39683207 lb
Gravity 32.17405 ft/s2
So the energy E = 4 foot * .4 pounds = 1.6 ft lb

slow down distance ? 3inch? 4.25 inch? 0.25 inch?
3 inch = 0.25 foot
4.25 inch = 0.35416667 foot
0.25 inch = 0.020833333 foot
Force = 1.6 ft lb / .25 ft = 6.4 lbf
Force = 1.6 ft lb / 0.35416667 ft = 4.5176470163045 lbf
Force = 1.6 ft lb / 0.020833333 ft = 76.8000012288 lbf
Force = 1.6 ft lb / 0.01 ft = 160 lbf
Force = 1.6 ft lb / 0.001 ft = 1600 lbf
So , next part is something Cantilever Beams ??

____
Thanks
I don't mow

Thats is a lot of math, and I would like to state before continuing this was a test blade free of charge, and the party offered to pay for it. For me its curiosity at this point.

Here is the grain [www.instagram.com]

A vid of my own edc in finit-
[www.instagram.com]

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KWB,
The grain looks fine. Not sure what to think about how that happened to the knife.

---------------------------------------------------------
Stone Sharp Edges
[www.youtube.com] [www.facebook.com] [www.instagram.com]

"I am still discussing issues of steels and performance at this stage.

-Cliff"

"Roman Landes said:
Cause geometry cuts, .....steel determines the level and the duration"

Quote
KWB
Thats is a lot of math, and I would like to state before continuing this was a test blade free of charge, and the party offered to pay for it. For me its curiosity at this point.

A vid of my own edc in finit-
[www.instagram.com]

Meow indeed

in your video,
the first toss lands tip first spine first
second toss unknown
third toss is edge first, maybe handle first

I would assume the broken blade "fell" sideways, and was spinning so the blade broke "transversely"


Here is the grain


____
Thanks
I don't mow

Look like it broke by tip whipping onto concrete/granite surface.

From 4ft hight, hold knife with tip up at ~45 degrees. Drop with flat side down. Rotate 30* + drop. Rotate 45* + drop. Rotate 90* (spine facing surface) + drop.

It sort like wrist flick/snap blade tip onto concrete/granite flat+angle and spine. This type of high impulse forces (spine down especially) would easily break all sort of blades.

While the jury is still out, new info suggests that they were using the knife to remove steel lids from drums. I would think one would have to put a decent amount of force to snap 5/32" stock blade was only 3in long.

Contact 570-486-9095

Kyle, looking at where it broke, it looks like its directly in the centre of a triangular looking serration. It is entirely possible that the way that serration is cut or the shape has formed a stress risor in the blade, where then trying to pop the steel lid they might have been doing a bit of twist while lifting and that notch just allowed the steel to pop in 1/2.

when testing a sword that had been wailing on rocks and steel very hard with no damage at all (d2, soft temper), the moment a tiny chip was formed in the edge, the next strike snapped the blade in 2 for this reason.

its just a theory. so many variables could have played a part. it could be as simple as Peters accidentally batching it with other steel in a less than optimal HT.

one thing you could try is to put the rest of the blade in a vice and with some pliers twist and see if the blade will snap easily at another weak point.if it snaps too easily, maybe there is a ht issue. if not, maybe it was a stress point.

----------------------------------------------------------------------
[data.gearbastion.com]
KnivesAndStuff (YoutTube)

All of that is entirely believable but they had stated 4ft drop, I could choke that down if I didnt use my blades but I do and often very hard.

If it was a riser it should have snapped further ahead to the first scallop serration it may not look like it but that area is much thinner and deeper.

The ht I could also buy but their were 20 blades and this is the only one with an issue.

Thats last part is a good idea, and make the handle into a blade as well and test that.

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Edited 1 time(s). Last edit at 06/16/2017 06:31PM by KWB.