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Home > Accessories > Sharpening Stones > DMT Dia-Sharp Plates > 140 Grit Diamond Flattening Plate 3"x8"
140 Grit Diamond Flattening Plate 3
140 Grit Diamond Flattening Plate 3
140 Grit Diamond Flattening Plate 3

140 Grit Diamond Flattening Plate 3"x8"

Item #: BIG140DiamondPlate

Average Customer Rating:
(4.5 out of 5 based on 16 reviews)

Read Reviews | Write a Review
Our Price: $29.95
Availability: Usually ships the same business day
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140 Grit Diamond Stone Flattening Plate. This one measures 8" x 2.75". These plates are not dead flat like the DMTs or Atomas which are 2 or 3 times the price but they are perfectly fine for flattening your stones or if you want to champfer the edges or for quick metal removal. If you're concerned about this pay the extra money and buy the DMT XXC or the Atoma 140 grit diamond plate. We offer them both on our site.
Customer Reviews

Product Reviews

5  CKTG 140 plate, August 25, 2017
Posted By: Jason - verified customer

I love this product... flattens EP and Chosera stones very quickly. Excellent value and high quality.

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5  Useful for Fast Metal Removal, August 17, 2017
Posted By: Dan Streng

This removes metal fast when it is necessary to create a new bevel or when knives are very dull or damaged. It is a good value for a tool of this type and saves a significant amount of time over using even a coarse stone. The initial bevel is the most important stage IMAO (in my arrogant opinion). Everything else is refinement.

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5  Great product!, July 1, 2017
Posted By: horriblebreast - verified customer

Very good for flattening stones.

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4  Nice diamond plate, May 21, 2017
Posted By: Ari Baranson - verified customer

This is a decent diamond plate. It is my first one so I have nothing to compare it to. However, it flattens all of my stones well, and is easy to use. It is a little hard to hold so I recommend laying it flat and rubbing the stones on it rather than rubbing it on the stones. I have found that it leaves a smooth finish that is not to coarse. My only complaint is that the back has an odd chip/extra bit of metal. However, this does not hinder the process but would prevent me from laying it completely flat on the counter, but I use a rubber gridded mat anyway. Works well and is great for the money. Certainly recommend for anyone on a tight budget

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4  Good, May 16, 2017
Posted By: RG - verified customer

Does the job. Good just not great. If was bigger would be easier to use making it a GREAT product.

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5  140 Grit Flattening Plate, November 6, 2016
Posted By: Frank K - verified customer
5 people found this review helpful

First used to repair a long neglected soft Arkansas stone. Worked great and the stone is almost good as new. Then used the plate to repair the tip of a hunting knife, which took only moments. Finally, I got around to flattening a new combo water stone. Surprisingly, the stone was almost perfect from the get-go. The plate is a very nice tool that is very reasonably priced.

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5  Works great!, August 10, 2016
Posted By: Jason - verified customer
4 people found this review helpful

After reading the reviews I bought this to flatten an old stone I have. I was worried that the cheaper version was a bad idea! I was wrong! Worked great!!

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4  More than pleased!, January 5, 2016
Posted By: Brian M (GopherBroke)
9 people found this review helpful

I ordered this on New Years Eve day, and it's already here (Jan 4)!
I ordered from somewhere else on the same day... and they have not even processed my order yet!
So kudos to Mark and the crew, again!

On to the topic!
I was surprised when the plate arrived that the entire plate (all 6 sides) are nickle/chrome plated, so no need to worry about rust :)
The finish on the plate looks great; no bare spots etc.

I'm the curious type and have to know everything! I've been that way since birth and every hobby/interest becomes an obsession. Each obsession lasts until a new topic comes along that interests me and then I veer off...

Flatness:
I measured the flatness of the plate with an Interapid dial indicator that is accurate to 0.0001"
What I found was that across the width of the plate (top, center, bottom) the plate has a twist that varied .0003"
Lengthwise the plate was within .0005".
The work surface being measured on was certified to be within 0.00005" over the entire 18X18 surface.

This is flat enough for me!
I've never used an Atoma, so I can't speak first hand... but I'm happy with my $30 diamond plate, and the $50 savings.

Only giving it 4 stars for now because I can't comment at all on longevity or life of the diamond.


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5  Good flattening stone, September 27, 2015
Posted By: Brett
5 people found this review helpful

I've used this for over a year now to flatten my stones. Works really well.

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3  Good for coarse shaping of a blade, not so much for flattening a stone, February 11, 2015
Posted By: Dan N.
4 people found this review helpful

I made the terrible newbie mistake of attempting to use a beautiful Blue Steel Japanese chef's knife to separate lamb chops (cut through a bone) and was rewarded with a 1mm deep nick in the blade edge. I used this basic diamond plate to re-shape the knife edge and prepare it for the remaining work, done on a succession of Shapton Pro stones (1000, 2000, 5000, 8000). The knife turned out great and I've been using it ever since. So as a very coarse shaping tool, this plate does the job.


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4  Product Review, August 25, 2014
Posted By: jason t - verified customer
5 people found this review helpful

this plate works great to flatten stones. just used it on 3 shapton pros and no worries. dont be scared because of the low price its another great value

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3  Product Review, January 7, 2014
Posted By: Jake Mitchell - verified customer
6 people found this review helpful

The stone itself is gritty, I would suggest paying the extra for a DMT or Atoma.

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5  Product Review, July 26, 2013
Posted By: M - verified customer
4 people found this review helpful

Flattens quickly and works up a slurry instantly. Great value and something everyone needs to accompany their stones.

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4  Product Review, July 17, 2013
Posted By: Chris Miller - verified customer
5 people found this review helpful

Very similar to DMT, only a hair narrower. Works fast, great value. A must have.

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5  Product Review, August 7, 2012
Posted By: ER - verified customer
6 people found this review helpful

Will flatten a stone in minutes as well as being excellent for knife repair.
An all around great value, and a must have for anyone serious about keeping there stones flat.


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5  Product Review, May 20, 2012
Posted By: C Flanagan - verified customer
6 people found this review helpful

Excellent value. I have two, one for knife repair and one for flattening/ slurry.
It's performed fantastically for tip repair. Cuts very quickly, with a decently even scratch pattern. By the same key, it brings up swarf instantly on a moderately hard stone.
Each plate did have one tiny flaw, a raised bit at some point along the edge. It's not a dealbreaker (I filed it right off) but it will need to be addressed before flattening finer stones. For the price, I think it's perfectly acceptable.


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