Sharpening Record Page

Hi - you said NIB was ok. This is a large classic Sebenza, took it out of the box today. I was curious about the sharpness, but I shave my head - so I pulled a hair out of my beard, and gave it a try:

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DRider said:
Hi - you said NIB was ok. This is a large classic Sebenza, took it out of the box today. I was curious about the sharpness, but I shave my head - so I pulled a hair out of my beard, and gave it a try:

DSCN1749.jpg


DSCN1750.jpg
Click to expand...

NIB is OK - record will be accounted for CRK, as it was for Kershaw earlier.

Thanks, Vassili.
 
Worked on my UKPK tonight along with a few others. Here's the setup I was using. 100 grit sanding belt glued to a dvd case, DMT fine and a strop. I've been using edge leading strokes for the microbevel ever since I tried sharpening that way. I get a cleaner edge more quickly than edge trailing.



http://www.youtube.com/watch?v=3kT5zIAptbc





 
Vivi said:
Worked on my UKPK tonight along with a few others. Here's the setup I was using. 100 grit sanding belt glued to a dvd case, DMT fine and a strop. I've been using edge leading strokes for the microbevel ever since I tried sharpening that way. I get a cleaner edge more quickly than edge trailing.



http://www.youtube.com/watch?v=3kT5zIAptbc





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Is that hair from your head? it looked like pubic hair in the vid lol.
 
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I know Nozh disagrees with me, but in my experience its significantly harder to get a knife to split a fine hair than a course hair. I accept his assertion that human hair is generally 60 to 120 microns, but I don't think that refutes my experience at all.
 
KeithAM said:
I know Nozh disagrees with me, but in my experience its significantly harder to get a knife to split a fine hair than a course hair. I accept his assertion that human hair is generally 60 to 120 microns, but I don't think that refutes my experience at all.
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In my experience with thin or thick it doesn't really require anymore sharpness for the former, thick hair is just stiffer which makes it easier to cut into it for me. I don't have any long hairs besides beard hair thoughs, unless I steal one from someone. :D
 
KeithAM said:
I know Nozh disagrees with me, but in my experience its significantly harder to get a knife to split a fine hair than a course hair. I accept his assertion that human hair is generally 60 to 120 microns, but I don't think that refutes my experience at all.
Click to expand...

I agree with Vivi that the coarse hairs are stiffer. I don't know whether the sharpness needed differs, but I think that the skill needed for whittling fine hair is higher. It's easier to whittle coarse hair.

Either way, I think we can all agree that if we can whittle/split hair, it's sharp enough. ;)
 
KeithAM said:
I know Nozh disagrees with me, but in my experience its significantly harder to get a knife to split a fine hair than a course hair. I accept his assertion that human hair is generally 60 to 120 microns, but I don't think that refutes my experience at all.
Click to expand...

I am not disagreeing with you - I just use only my own hair from my head, not body hair not from the beard. I did not have statistic at all. My hair I believe relatively thin and you may see it on the pictures. But I do not think we should limit in any way this sharpness test to Russian hair only - after all Russian are endangered species disappearing from face of the Earth in big numbers.

I think any human hair is OK to post here - it is matter of trust for viewers to decide which hair harder to slice which easier, but any whittled hair are very welcomed!

Thanks, Vassili.
 
I just sharpened BM 710HS with M2 to hair whittling sharpness and tried it on all hairs available (all thiner then mine). Thinest I think my mom has due to her old age. But all hairs I tried I was able to whittle. So I do not think really that this may matter too much, really.

Thanks, Vassili.

P.S.

Random-405.jpg
 
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By looking at the magnified photo of the structure of human hair, it would appear that it will split in one direction easier than the other.

Human_Hair3-tn.jpg


Maybe I am just "Splitting Hairs" :D
 
Sorry for being so late to the party Vassilli. Here's a hair split in 4 done with my ZDP Caly 3:

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Here's one split in 3 by my Emerson CQC14 (154cm):

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Is this count?

Done this with my Boker Whittler. The thin one is my 3 year old daughter's hair.


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I start thinking that this is not really thickness of the hair what really matter, but size of the shells which really sharp edge can pick to make a shave. This is why It should not really matter too much how thick hair itself is - to mee it looks like human hairs has same shell sizes so I was always able to whittle any hair if I able to whittle one. I am not sure about non human hairs...

What do you think?

Thanks, Vassili.
 
Hey Vassili,
Here is a quote from a thread on the straightrazorplace forum concerning testing for sharpness using hair strands. The post is by Bart and he is addressing variability and ways to improve consistency.

The hair must be clean, total absence of natural oils. The best way to make sure of this, is to harvest a strand of thoroughly, freshly washed hair, and store it in a small box for future use. I have a box of my own, rather fine hair and a box of my youngest daughter's thick and stiff hair. One would expect them to behave differently, but they don't. Neither does my wifes hair, or my straight shaving friend Chris' hair.

When performing the test, wet your thumb and index finger with some water, pinch the hair and drag it through your fingers to moisten it. Wait about 10 seconds and then perform the test. My point of contact is about an inch from where I hold the hair.

Source link: http://www.straightrazorplace.com/forums/basic-honing/24691-hht-what-stage.html
 
This is a very VERY impressive thread. I never even gave it a thought to whittle hair.

Time to give the macro function on the camera a workout...:cool:
 
nozh2002 said:
I start thinking that this is not really thickness of the hair what really matter, but size of the shells which really sharp edge can pick to make a shave. This is why It should not really matter too much how thick hair itself is - to mee it looks like human hairs has same shell sizes so I was always able to whittle any hair if I able to whittle one. I am not sure about non human hairs...

What do you think?

Thanks, Vassili.
Click to expand...

Try cat hair.
 
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