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TOPIC: New 800/1000 diamond stones mislabeled?

New 800/1000 diamond stones mislabeled? 2 years 1 month ago #4200

  • joema4
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As mentioned by ThomasMeeks in this post: www.wickededgeusa.com/index.php?option=c...ldforums=1&Itemid=63

It appears the recent 800/1000 grit diamond stones might be mislabeled. The 1000 grit feels significantly rougher than the 800 grit, both by touch and when sharpening. See below 200x photomicrographs.

Can anyone confirm this?

Label=800, color=light blue:


Lable=1000, color=violet:
Last Edit: 2 years 1 month ago by joema4.
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Re: New 800/1000 diamond stones mislabeled? 2 years 1 month ago #4201

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Added oblique angle shots:

Label=800, color=light blue:


Label=1000, color=violet:
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Re: New 800/1000 diamond stones mislabeled? 2 years 1 month ago #4206

  • wickededge
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Joe,

I've looked at an awful lot of those stones under the scope and they appear to be labeled correctly. You're welcome to send them back for me to verify - if they're wrong, I'll definitely send you some correct ones. If you have a measurement feature on your scope and you've calibrated it, you should be able to measure the tiny little circles of light. The 800# stones should be in the 12um-16um range and the 1000# stones should be in the 7um to 10um range.

If they're fairly new, they'll be cutting much more aggressively than they will once they're broken in. Also, what scope do you have, what magnification?

joema4 wrote:
As mentioned by ThomasMeeks in this post: www.wickededgeusa.com/index.php?option=c...ldforums=1&Itemid=63

It appears the recent 800/1000 grit diamond stones might be mislabeled. The 1000 grit feels significantly rougher than the 800 grit, both by touch and when sharpening. See below 200x photomicrographs.

Can anyone confirm this?

Label=800, color=light blue:


Lable=1000, color=violet:
--Clay Allison
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Re: New 800/1000 diamond stones mislabeled? 2 years 1 month ago #4207

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I just checked a bunch of stones and they're all pretty consistent, so if you're able to accurately measure the stones, you should find that the 1000# stones average 7um but you may find a few that are a micron or two bigger. For the 800#, they should be around 12um but may vary a little bit.
--Clay Allison
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Re: New 800/1000 diamond stones mislabeled? 2 years 1 month ago #4209

  • joema4
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Clay, I have a Dino-Lite AM-411T, unfortunately it doesn't have a measurement feature.

The magnification of the first two photos is about 200x at the plane of the transparent nozzle, according to the mfg. The second two were slightly inside the microscope nozzle, so it's probably a little higher, say 250x.

The new stones cut more aggressively, but I wasn't comparing new vs old, but new 800 grit vs new 1000 grit.

If you look at my second two photos (the oblique angle shots) the 800 side looks smoother than the 1000 side. This corresponds with the tactile feel -- the 800 side feels smoother than the 1000 side of the same brand new stone.

I realize this isn't definitive, just wanted to see if anyone besides me and ThomasMeeks had observed it. I'll try to get some better photos.
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Re: New 800/1000 diamond stones mislabeled? 2 years 1 month ago #4210

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New 800 grit diamond stone, about 200x:


New 1000 grit diamond stone, about 200x:


New 800 grit diamond stone, about 200x, corner:


New 1000 grit diamond stone, about 200x, corner:
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