Dmd Chinese diamond stone review

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Dominick Maone

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Bought this 1000 grit stone on December 29 and it arrived approximately Jan 21.

I do not have any high vanadium or high hardness knives to test it on. But, I went to my sisters and sharpened about eight of her terrible knives. I did not bring any other stones, which was a mistake.

I guess I expected it to be faster.

Overall I would say it is definitely worth about 45 USD with tax.

The only knife of hers I was not able to sharpen was probably 50 thousandths behind the edge, that is the Argentinium knife in the pics. The others were cheap stainless and all sharpened pretty easily.

The stone clogged minimally, but I think I had the water mix wrong. When I left the water running it seems to keep cutting.

I would say close to zero percent of the stone was used during this session. There is just one area on the side that the Argentium knife dug into while I was trying to sharpen it. I circled it in the pics.

It is next to Shapton Pro for size comparison. It does not fit in Shapton box or on top to use box as holder.

Anyway, sorry it’s not the best review. But if you are looking to get into diamond stones that are similar to Japanese water stones, this is a good stone to try out.

I can try to answer any questions you have.

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Enough feedback to know where I am (on the edge or not) but not a plesant one. It allows me to be efficient by tactile feedback much more than a diamond plate so keeping an angle is eassy.
And of coursse no slury other than steel swarf.
 
I also have tried it .It is ok .
but I think the abrasive power is not as strong as ceramic type Japan stones such as Bester 1000
 
Enough feedback to know where I am (on the edge or not) but not a plesant one. It allows me to be efficient by tactile feedback much more than a diamond plate so keeping an angle is eassy.
And of coursse no slury other than steel swarf.
I am not sure how to rate feedback. To me, it feels nicer than the Shapton pro 1k, but not quite as nice as the King Deluxe. The Shapton pro just does not feel like anything to me, as if I am sharpening on a piece of floor tile.
 
I am not sure how to rate feedback. To me, it feels nicer than the Shapton pro 1k, but not quite as nice as the King Deluxe. The Shapton pro just does not feel like anything to me, as if I am sharpening on a piece of floor tile.
The two comparisons help me a lot to classify the feedback. Thanks a lot for this.
 
I guess I expected it to be faster.

Boy was that an understatement! This thing is slllllooooooowwww!!!!! Still no high vanadium steels, so no idea of the diamond legitimacy.

Anyway, I decided to sharpen a little 62ish Aebl knife to around 7-10 degrees per side. Want to check edge stability. You can see, this is a small knife.
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The knife was ground to about 5 thousandths before initial sharpening. This sharpening was not the initial sharpening. I have been using this knife at around 15 degrees the last few months. This sharpening was just to decrease the angle. You can see how tall the secondary bevel is, it is a very low angle. The problem is, it took around 20 minutes with the diamond stone FOR THIS ONE SIDE!!
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I sharpened the other side with a Shapton Pro 1k just to compare. Took 7 minutes maximum. Below are the pics off the Shapton.
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Then I sharpened both side on Shapton glass 4K. Took about 5 minutes per side.
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You can see below the low angle compared to about 15 degrees on a similar shape knife. The knife on the left was also around 5 thousandths before sharpening to around 15 degrees.
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Family photo.
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Latest creation.
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Overall, this stone is amazingly slow. But maybe all diamond stones are?
 
Overall, this stone is amazingly slow. But maybe all diamond stones are?

Nope. Comparable Naniwa resin-bonded diamond stones are a bit slower than Shapton Glass, though pressure increases speed considerably, with the drawback of increasing deep scratches. Venev, I think a bit slower, but not bad. Vitrified diamond stones I've tried are downright fast.

It is entirely conceivable that a cheap diamond stone has a much lower density of diamonds than the expensive ones. Seems to be true for cheap vs. expensive diamond plates and files, anyway.
 
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