Sharpnes record on Model T Street - 40g

[nozh2002]

Just, recently I try new instrument for sharpening and got amazing result.
I sharpen my old Model T Street (2005) to the sharpness 40 gramm to cut cotton thread.

I fix thread on the weights and measure pressure required to cut thread. I do 21 measurements and get median as a result.

I got 40 gram sharpness (and median was close to 30). This is full results:

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

And 3 times it was 20 g - like lightest touch and it was cut! Never saw this before!

Usually average sharpness for manufactured knives 90-100 (Best 60, worst 130). Before I was able to sharpen to 70 myself. But now I think I get how to make it!

Thanks, Vassili.

 

[ColdOne]

Wow! what are you using to sharpen?

 

[nozh2002]

I just play with it trying to cut hair, keeping blade fixed and moving my Slavic hair over the edge. Not consistently but few times (10% cases) it was able to cut/ But now I have it split! It looks like tiny branch about 3mm long. Do not know how this happen. I'll post picture tomorrow.

Thanks, Vassili.

 

[nozh2002]

This is first time I split the hair:

Then I tried to repeat it and and I did! It almost cut off but you may see that it actually split there.

Never thought this possible. I was able before to slice surface of newspaper and cut off skin on finger tips without blood, but not hair.

I use DMT benchstones, green rouge and diamond powder on leather up to 100000 Mesh.

Thanks, Vassili.

 

[steelnut]

Nice Job!:thumbup::thumbup:
Can you show the whole knife?
Thanks

 

[nozh2002]

Nice Job!:thumbup::thumbup:
Can you show the whole knife?
Thanks

Sure

As I understand it is 0.2" (3/16") thick Meaner Street - same as it was sold few weeks ago in BCS.

Thanks, Vassili.

 

[Andros]

This is really amazing performance! Could you please elaborate on the mediums that you used (what type of DMT waterstones, where do you get the green rouge and the diamond powder from), as well as, the steps that you followed to reach this level of performance? What about sharpening angles?

 

[nozh2002]

It is DMT DiaSharp

I use Extra Extra Coarse, then Coarse, Extra Fine and Extra Extra Fine.

After this I use Green Rouge (Chromium Oxide compound) from local store for Jewelers, but it available over Internet also. I used diamond powder 6 microns before, but it is expensive to turn edge mirror this way (and I like mirror for entire edge even it is not necessary for final sharpness). Green Rouge is way cheaper and you do not need to limit yourself, but you have to clean coating after this. Buggest problem it not to round the edge so it must be thin leather and right angle for moves - I am trying not to touch to much the very edge it will have some anyway, and it will be just enough -

Then I follow with Diamond powder 14000 Mesh, 50000 Mesh and 100000 Mesh on same setup I use for Green Rouge. Again it should be sligtest moves because at this point it is easy to round the edge which will bring final sharpness to 70 g. Better not to be distructed at this time.

I am not confident for 100% yet, but more I am practicing, better results I have.

Thanks, Vassili.

 

[bluejaunte]

Impressive--I think you're entering scalpel territory there!

Hmm...I've been needing corneal implants...

 

[xaman]

wow - -that is scary sharp!!!

 

[ORIZONDO]

How Much You Spend Into The Knife 2 Hours ???

 

[Solstice]

Fantastic bro...the edge you achieved is not only scary sharp but the appearance of it is very nice also. Freehand sharpening is a true art...sadly one I've never been able to master. Machine only for this bloke!

 

[nozh2002]

It is easyer with stand I use. Initial sharpening with recreationg new edge may take quite a time, but this time about 30-40 minutes.

richard_j sad he can make it in a couple of minutes using paper wheel
http://www.bladeforums.com/forums/showpost.php?p=4817838&postcount=5

Thanks, Vassili.

 

[iamsmiling]

That is a remarkable edge, scalpel country is right!

I'm happy if mine come away sharper than when I started.

 

[Irezumi]

You are the sharpening king no doubt..actually the other thread you put up like this convinced me to dig out my DMT xx coarse and have another go (I hadnt used it before) and I convexed a couple of old knives. The reprofiling allowing me to get super sharp (not to your standard) but I will be getting some buffing compound soon ...

 

[Ban]

Now that is what I call Crazy Sharp. So sharp that if you look at it wrong it will cut you Superb freehand sharpening skills :thumbup::thumbup:

 

[KellyGlanzer]

Very Impressive set up. I have used diamond but found that I like the waterstones better. Have you tried any of the Synthetic waterstones from Norton?
Your leather is thinner then mine as well. I will have to get a thinner piece.

 

[nozh2002]

Very Impressive set up. I have used diamond but found that I like the waterstones better. Have you tried any of the Synthetic waterstones from Norton?
Your leather is thinner then mine as well. I will have to get a thinner piece.

I did try waterstones but the problem is for me that it is messy - water, dirt from stone and steel. With my natural ability to get dirty this is just disaster. For same reason I do not use oil stones etc.

I think it is not only thiner leather but also that it is not glued to wood so it is more flexible under blade, may stretch and move so it does not bend under blade and so does not round the edge.

Thanks, Vassili.

 

[Tyrkon Lawson]

OMG!!! That is just insane. Awesome job. How much do you charge for classes?

 

[resinguy]

Vassili, that is some great work! :thumbup:

You should post your success over on the Toolshed forum, that's where all the sharpening geeks hang out.