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TOPIC: 2000x Microscope

Re: 2000x Microscope 2 years 2 weeks ago #5598

  • wickededge
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While not pretty to look at at 2000x, here is another image of a blade that I polished mostly smooth and then used the fine side of the Micro-Fine ceramics to lay in a a scratch pattern:

Micro-Fine-.jpg


The fine scratches going from lower left to upper right are left over from the kangaroo strops with .5um diamond spray. The couple of big scratches coming from lower right to upper left are from the Micro-Fine stones. I took 4 measurements: .57um, .64um, .68um and .72um. I calibrated my scope and the lens with a NIST traceable stage micrometer so I feel confident about the accuracy of the measurements inasmuch as I could find the correct edges of the scratches to measure. As can be seen in the photo below, those edges can be tricky to choose and can affect the measurement by +/- .05um:

Micro-Fine-Zoomed.jpg


I really wanted to verify the grit of these stones since I've had questions since they came in. I'm happy to report that they look spot on to my amateur eyes.
--Clay Allison
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Re: 2000x Microscope 2 years 2 weeks ago #5602

  • cbwx34
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Awesome! The one I'm curious about though is the MicroFine - Coarse. I think that's the one that seems rougher than rated.
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Re: 2000x Microscope 2 years 2 weeks ago #5603

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cbwx34 wrote:
Awesome! The one I'm curious about though is the MicroFine - Coarse. I think that's the one that seems rougher than rated.

That's next on the chopping block :) I'll go back through with the kangaroo strops and smooth out the bevel and then use the Micro-Fine - Coarse stones and see what we get.
--Clay Allison
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Re: 2000x Microscope 2 years 2 weeks ago #5607

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Here is the first look at the Micro-Fine - Coarse stones:

Micro-Fine-1.4.jpg


I'm surprised not to see more work done and I'll have to go back and get after it a little more. I did complete 50 strokes, starting from a very smooth bevel. In this photo, you can still see bits of Sharpie marker in the low places since I didn't clean it with alcohol before putting it under the microscope. I measured the largest of the scratches and they averaged between 1 and 2 microns.
--Clay Allison
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Re: 2000x Microscope 2 years 2 weeks ago #5610

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These next two images explain a lot:

Micro-Fine-1.4-2.jpg

Above - 150 strokes with the Micro-Fine 1.4um Coarse Side stones LAPPED to 3um on diamond plates

Micro-Fine-1.4-3.jpg

Above - 50 strokes with the Micro-Fine 1.4um Coarse Side stones NOT LAPPED

The scratch size is in the right range with both stones but the depth of the scratches is greatly exaggerated with the unlapped stones.
--Clay Allison
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Re: 2000x Microscope 2 years 2 weeks ago #5611

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I'm getting better with the software provided with my scope. Here is a shot of the blade after the Superfine - Fine stones, 50 strokes:

Superfine---Fine-1.jpg


The scratches are in the 1.5um-3um range.
--Clay Allison
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