Porosity in a blade.

Okay, Recon. I'm struggling with it. 30 years away from computers did little to improve my proficiency!

Uncle Bill
 

MIME is not so much a file type as an encoding type - sometimes it works best if you only send one file per message.



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Jeff Paulsen


 
Jeff, both files downloaded as word files. All I get is a bunch of code. What can I do to decode this?

Uncle Bill
 

Got 'em up on a web page for y'all.

Recon Jack's Khukri X-Rays

My mailreader automatically handles MIME encoding (and I bet Recon's does too), so it wasn't a big deal - I got the email and there they were.

Recon, let me know if you want any changes to the page - your pix, your page, I figure.


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Jeff Paulsen


 
Jeff, many thanks. I wish I knew how to do that!

I looked at the pix and am not for sure what I'm looking at. I've looked at other xrays and when something goes wrong it generally shows up as black or dark and I didn't see that. And, all the shop experts down there seem to be impressed with what they saw so I guess it is good at any rate.

We will need Recon to interpret the pix for us unless there are other experts who can.

Many thanks to Recon for interesting stuff and Jeff for good help in being able to look at it.

Uncle Bill
 
Thank you Jeff for getting those up. They look a lot different than if your standing in front of the machine. That one picture is not me, its a friend, he asked me to block out his face. (I guess in case the FBI reads this) anyway the "BEAST" is so big I had to x-ray in sections. You can make out the notch, the dogleg, and the point. Point is to the left in every pic. If you can't tell, there is absolutely no porosity or impurities in this knife. I will send (Jeff if its alright) a picture tonight with some porosity were you can tell the difference. I have a bag of blades I'm taking tonight, just for my curiosity. I got a bug now.
The blade that had the porosity in it, I told you about, that I had scribed, I broke today. It would not (at least I could not) break it between the scribes. (where porosity is) but broke on every line pretty easy. Which is what one would expect. Probably every knife is different, but I would guess that HI's Kami's are pounding the gas out of these knives!

Hope this was entertaining. And thanks again Uncle Bill and Jeff for the help!

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Jack Russell
 
:
Thanks Jack,Jeff and Uncle.
It will be interesting to see pix of the knife with the porosity.
I think I might be starting to understand.If there are dark spots there is either a big or perhaps several small gas bubbles in the steel or whatever is being x-rayed??
Jack is this the smae kind of thing that is used on welds for the pipelines and such?

It will be interesting to see what the other knives look like.
Jack are you including your CS Trailmaster in that bunch?
It is still a good knife,just a little small when compared to the 18" AK. Mine CS hasn't chopped nails,but it did chop some Arkansas flint one time.
smile.gif
I think the AK would probably fare better in a test though.

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>>>>---¥vsa---->®
The civilized man sleeps behind locked doors in the city while the naked savage sleeps (with a knife) in a open hut in the jungle.
 
Recon
Have you x-rayed the solid brass handled khukuri?
Will you post the results?
Jim

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What? Another knife? Don't you have enough of those things already?
How many does one person need?
And just what are you going to do with this one that you can't do with the others?
What is the purpose of all these knives anyhow??

 
Thanks everybody for great help.

Recon, this was your idea and your work and many thanks for taking the time and going to the effort to get this done. Jeff tried to give HI some of the credit but I told him we did not deserve it. All we did was supply the khukuri.

Uncle Bill
 

Reminds me - I used to have one of those little Ram-Line plastic .22 pistols, with a 15-rnd translucent plastic magazine. First thing I did when we got a scanner at work was scan a full mag, and put the pic on my desktop. It looked a whole lot like that. I miss that gun.

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Jeff Paulsen


 
Bill - Recon deserves all the credit, yes, but what good is a picture of a knife if you don't know what kind it is? that's all I meant by saying where the knife came from. Who knows, maybe someone will look at those xrays, and say 'I must have such a knife'
wink.gif




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Jeff Paulsen


 
You are right, Jeff. It is a throwback to my old engineering days when some engineers would try to take credit for the work done by others. Supervisors were notorious for doing this. I bent over backwards not to do this and when I was a boss I always went to extra efforts to make sure my men got the credit for work and ideas rather than me. Old habits are hard to change.

Uncle Bill
 
Hey everyone,

Just got back from work. I actually had to work tonight so I did'nt get to do all the knives I wanted to, but I left them there for another day.

I just sent Jeff a good picture of a casting and on it is a part, (what is called a boss) it is round and about 3 inches high. It should be solid but you can see the voids and porosity in the boss and in the rest of the part. Jeff is kind enough to post it for me so we keep them all together. To answer a few questions:

Yvsa, this is not a portable machine, but is very powerful, I know it will penetrate 8" of solid steel. And since I got my Khukri's, I forgot I had a trailmaster!

Gonesailing, I have x-rayed the GH brass handled WW. I have the pic's on a disk. I told Craig I'd send them to him to do what he wants with them, as soon as I can.

Jeff, The reason I sent the pic's with my friend holding the knife and it sitting in the machine is so we could tell it was an HI and not another piece of steel. I did the same with the GH Blade.

JoeL, I don't have an answer about forged vs stock removal. Another guy at work stuck one of those multi-tools that had a broken blade on it, in the machine. The rest of the blade had porosity in it. He seemed to think that the blade had been stamped out of a large piece, because it was so thin, so I don't know...

It's been fun though, I have learned a lot since I have been on this forum. Would like to thank everyone for post's and comments.

Uncle Bill, it looks like my wifes brother will not make it so I will probably have to go to LA. for a week or so, in a couple days.
Will see you when I get back.


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Jack Russell
 
Thanks, Jeff. It sure would be handy to have one of those xray machines so I could look inside the blades to see what fold lines and other flaws might be there. These things are not always visible on the surface.

Uncle Bill
 
Recon Jack,

Can you see a pore size difference between the khukuri and your bosses knife?

I can't remember what the wavelength of X-rays are but this probably puts a limit on its resolution.

Very interesting information. Like Bill, I think it would be great foe assessing fault lines.

Will
 
X-rays commonly used in non-destructive testing of knife-like objects should be in the energy range 40-400 keV. This corresponds to wavelengths in the range 3.1 x 10^-11 meters to 3.1 x 10^-12 meters.

[This message has been edited by Howard Wallace (edited 18 August 1999).]
 
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