Why the shapton 30k is awesome

Sadden

Sadden

Joined
Dec 19, 2011
Messages
795
Jnat Kouzuke posing for the reflection shot , this is straight off the stone , no stropping


Micrograph
 
Missing a spot there in that micrograph.
 
Did you miss the "edge of the edge?! ". Lol. The rest of the bevel looks awesome though.
 
Couldnt figure it out so i spoke to the master of the Shaptons , Thomas Blodgett about it. He said that it looks like 30k scratches , but the edge of the edge was getting so thin that it was starting to flex a little bit. The knifes performing like it should.
 
Interesting theory, sounds plausible. At what magnification level was the photo taken?
 
The 30K is a truly amazing tool. I don't use it on very many knives, but on "braggin' rights" blades I love it.

I would also be quite interested in seeing a side by side comparisdon of a 30K pro and a 30K Shapton glass.

Ben
 
eKretz said:
Interesting theory, sounds plausible. At what magnification level was the photo taken?
Click to expand...

Is there any way to calibrate to a scale?

I have to believe the explanation, but less pressure should get it clean right to the edge - the abrasive should keep working at a lower amount of pressure than what's needed to flex the apex.
 
I'm not sure what you are asking with the calibrate question. I agree with you to a point that reduced pressure ought to help, but we don't know the included angle nor the magnification. If the magnification level is very high and the included angle very narrow I could certainly see flex happening. Down in the fractional micron thickness range (which a good edge should be) even hardened steel is flimsy. So a small amount of loading or a little too much pressure and there you go.
 
eKretz said:
I'm not sure what you are asking with the calibrate question. I agree with you to a point that reduced pressure ought to help, but we don't know the included angle nor the magnification. If the magnification level is very high and the included angle very narrow I could certainly see flex happening. Down in the fractional micron thickness range (which a good edge should be) even hardened steel is flimsy. So a small amount of loading or a little too much pressure and there you go.
Click to expand...

I was thinking there should be a way to put a scale on these pics to see where its at. Magnification would tell a little, but not the same as having a scale - was more a question to Sadden, not to you.

Yes, too much pressure would flex the apex out of whack and not get it treated well. Should be user-correctable.
 
Magnification is 400x through a veho.

Steel is Aus8 , 20dps , hollow ground

Toms advice was to go back to the 8k and do alternating strokes even lighter than i already am. Doesnt take long , just didnt get a chance to last night.
 
It sounds to me like he has got you sorted. At 400x that is not a very wide area at all.
 
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