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TOPIC: New 800/1000 diamond stones mislabeled?

Re: New 800/1000 diamond stones mislabeled? 2 years 2 months ago #4224

  • joema4
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jendeindustries wrote:
Joema - can you get a microscope picture of your edge from the 800 and 1K diamonds? That would be more tangible proof to see if the numbers on the stone are consistent with the results.
That's a great idea; unfortunately it will be a day or so before I can do that.
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Re: New 800/1000 diamond stones mislabeled? 2 years 2 months ago #4321

  • joema4
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OK I did photomicrographs of an S30V Ritter Mini-Griptilian after 100 strokes of new 800 grit and 1000 grit diamond stones; see below. It apparently confirms the previous photos, also the tactile feeling of the stones. 1000 grit is significantly more coarse than the 800 grit. There are several possible explanations, but the most obvious is the stones are mislabeled.

The stones are relatively new but not pristine -- I've previously done about 10 knives on them. I don't think continued break-in will alter the current behavior.

Progression (all mostly-new diamond stones): 100, 200, 400, 600, 800, 1000. After that I went back to 800. Whether stepping up from 800->1000 (as labeled) or down from 1000->800, the behavior is the same: 1000 is more coarse and produces a less finished bevel.

For now I'll just use the 800/1000 diamond stones in reverse sequence.

1000 grit diamond:


800 grit diamond:
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Re: New 800/1000 diamond stones mislabeled? 2 years 2 months ago #4327

  • jendeindustries
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Perfect pictures, Joe!

Believe it or not, your paddles are correctly labeled.

What you are seeing is the 1K diamond beginning to reveal the deeper scratches left over from previous diamond plates - probably the 200 or 400. The 600 and 800 plates actually do a very good job in masking them.

You can go back to the 600 and 800 and do about 50 or so ultra light passes, then hit the 1K again and see if things are improved. ;)
Tom Blodgett
Jende Industries, LLC

My Blog: jendeindustries.wordpress.com
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Re: New 800/1000 diamond stones mislabeled? 2 years 2 months ago #4328

  • PhilipPasteur
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Yes,
Great photos..
Of topic, but maybe you could PM me with what you used to take them and especially what you did for lighting.

Phil
Phil

MAX 2001-2013
Hoping there is that bridge!
I miss you Buddy!
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Re: New 800/1000 diamond stones mislabeled? 2 years 2 months ago #4330

  • mark76
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PhilipPasteur wrote:
Yes,
Great photos..
Of topic, but maybe you could PM me with what you used to take them and especially what you did for lighting.

Or post it. I'm interested too.
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Re: New 800/1000 diamond stones mislabeled? 2 years 2 months ago #4338

  • joema4
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PhilipPasteur wrote:
Yes,
Great photos..
...what you used to take them and especially what you did for lighting.
Phil
They were taken with a Dino-Lite AM411T USB microscope. It just plugs into a PC USB port and has its own software for image and video capture. There are many different models, some not very expensive. www.dino-lite.com/products_list_minute.p...1T%20Dino-Lite%20Pro

It has a ring of LEDs that surround the lens which provide primary illumination. Background illumination is just room lighting. The depth of field is very shallow, so anything in the background will be out of focus.
Last Edit: 2 years 2 months ago by joema4.
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