Best manufacturer sharpness I ever saw!

It just came today and because I have my test set up, I just check out of the box sharpness. It is:

40 +++++
50 +++++X+++++
60 ++++

This is better then Currahee 60g sharpness, which hold record from Febrary of this year. This blade was inspected by #47 - I am not sure is it the person who sharpened it? If so - very good job!

Thanks, Vassili.

<img src="/ubbthreads/images/graemlins/thumbup.gif" alt="" />

Glad to hear that you are impressed with it Vassili!

Crikey, a sharp knife escaped from Dan's factory! <img src="/ubbthreads/images/graemlins/shocked.gif" alt="" />




(Sorry guys couldn't resist!)

Dumpster Mutt sharp? I mean hair popping sharp?! Inconceivable! <img src="/ubbthreads/images/graemlins/ooo.gif" alt="" />

A reprieve for #47.

mine also had what is probably the sharpest factory edge on a fixed blade i ever had.

mine also was #47

Yes, both of mine came sharp as well, even though I did reprofile one of them.

That is great news! I have noticed as Scrap Yard continues to release new blades they are getting sharper and sharper. Literally, not figuratively that is.

Now I am getting DMLE envy!

Well it is really outstanding sharpness - 50!

Let me tell sharpness of other knives I tested, so you see the difference:

Microtech Currahee D2 - 60
Kiku Matsuda Tanto II OU31 - 60
Spyderco Military BG42 - 60
Spyderco Endura ZDP189 - 60
J.P.Holmes CPM 10V - 70
Dozier KS7 D2 - 70
Swamp Rat HRLM SR101 - 80
Busse Meaner Street Red INFI - 80
Kershaw JYD Sandvic 13C26- 90
Kershaw Cyclone ZDP189 - 90
Fallkniven P SGPS- 90
Busse BA INFI - 100 (inspected by #4)
Buck 110 CPM154 - 110
Mission MPK-S -130
Swamp Rat Mini UM SR101 - 130
Busse BA INFI - 130

Thanks, Vassili.

Nozh, what, exactly do the numbers mean? How do you measure it?

It is statistically average weight you need to cut cotton thread #10.

-------------------------------------------------------------
How to do this:

1. Make table on paper like this:

10
20
30
40
...

2. I mark some point on the edge.

3. I tie cotton thread #10 around small wooden base, fix it with scotch tape:







4. Put it on simple kitchen spring scale (I have graded by 10g from 0 to 250), make sure it shows zero (it should be some way to fix to zero with stand on).

5. As gently as possible cut by the marked position on the edge and see what scale shows at the moment of cut - what maximum weight it reach.

6. Put '+' in your table to the row for this weight.

7. Repeat 3 to 6 at least 21 times or more

8. on the table filled by '+' count 11th (if you did 21 tests) and mark it as 'X'. This will be median - one of statistical average, most applicable in this case (same used for average price on housing market).

so weight which correspond to median - 'X' will be result of sharpness test.

Of course it will just show some aspect. So this is why I prefer to show entire table like this:

40 +++++
50 +++++X+++++
60 ++++

Which is perfect Gauss curve.

If you have this

20 +
30 +++++++++
40 X+
50 +
60
70
80
90 ++++++++

- then something is wrong - probably you have sharp edge showing 20 but chipped somewhere...

Thanks, Vassili.

Thanks, nozh. That's more objective and scientific than my method of cutting paper or shaving. Glad the Scrap Yard knives are made nice and sharp lately.