Knife Sharpening Phenomenon?

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Javascript
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Knife Sharpening Phenomenon?

#1

Post by Javascript »

I have noted what appear to be strike marks on my blades when sharpening with stones using my Lansky (my WEPS isn't here yet). They look akin to high speed particles in a cloud chamber--all different angles.
My initial theory is that small particles break off the stone at high velocity and scrape along the blade.
An alternate theory is that they were always there and I just never paid close enough attention until inspecting the blade when sharpening. I believe the first.
This doesn't happen with my SM.

Anyone seen something similar before?
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Donut
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#2

Post by Donut »

If you can get a picture of it, it would be VERY helpful.
-Brian
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Waiting on a Squeak and Pingo with a Split Spring!
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Popsickle
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#3

Post by Popsickle »

i think i know what your talking about, i get those on my sharpmakers and my previously owned edge pro. got a wicked edge showing up in less than a week
rycen
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#4

Post by rycen »

jwrickma24 wrote: got a wicked edge showing up in less than a week

How long ago did you order?
We would rather be the knife in your pocket, because is "works" better, than the knife in your showcase, because it "looks" better.

sal
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jackknifeh
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#5

Post by jackknifeh »

Javascript wrote:I have noted what appear to be strike marks on my blades when sharpening with stones using my Lansky (my WEPS isn't here yet). They look akin to high speed particles in a cloud chamber--all different angles.
My initial theory is that small particles break off the stone at high velocity and scrape along the blade.
An alternate theory is that they were always there and I just never paid close enough attention until inspecting the blade when sharpening. I believe the first.
This doesn't happen with my SM.

Anyone seen something similar before?
I might have seen what you mean. I would get scratches on the bevel even when using finer grit stones. I would explain it as tiny diamonds embedded in the stone and the diamonds would cut scratches as I stroked the edge. The scratches were just like my angle strokes. I was using water stones that came with the Edge Pro which is what I use. I ordered some moldmaster stones from Congress Tools, Inc. of 320, 400 and 600 grit stones and use them with the EP. The scratches are gone. The moldmaster stones are considered polishing stones by Congress Tools. These stones are very nice for sharpening and really really great for polishing the bevel with no scratches. Then a few minutes on a strop with diamond paste and I have a mirror bevel with no scratches. So, I attribute my scratches to the stones. I'm going to try other types of stones from Congress Tools. They have several types and grits to choose from.

Jack
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unit
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#6

Post by unit »

Why would anything be be breaking or traveling at high velocity?

I have never seen anything like you describe, but I make it a rule to always use low pressure, and slow strokes. All scratches are perfectly aligned with the direction of my strokes, and I continue with a media until all scratches are on the same scale (as the grit being used) before progressing to the next step.

I guess I need to see a photo. Perhaps I am not understanding your methods/magnification.
Thanks,
Ken (my real name)

...learning something new all the time.
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phillipsted
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#7

Post by phillipsted »

Using diamond stones, some of the larger grit sizes really gouge out ruts in the blade. These have to be worked out very carefully through your progression - ensuring that you remove ALL the scratches from the previous grit before moving on to the next stone.

For me, this requires a small jewelry loupe and a good "feel" for the stone dragging across the bevel. You can usually get tactile feedback when the stone has done its job...

TedP
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