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Home > Resources > For Professionals > Sharpening Stones > Diamond Plates & Products > CKTG 140 Grit Diamond Flattening Plate 3"x8"

CKTG 140 Grit Diamond Flattening Plate 3"x8"

Item #: BIG140DiamondPlate

Average Customer Rating:
(4.5 out of 5 based on 11 reviews)

Read Reviews | Write a Review
Our Price: $40.00
Availability:
The CKTG 140 Grit Diamond Stone Flattening Plate is a versatile, fast-cutting tool designed to keep your sharpening stones flat and working at their best. Measuring 8" x 2.75", this plate offers plenty of usable surface area for routine stone maintenance, chamfering stone edges, and quick corrective work. The 140-grit diamond surface strikes an ideal balance — aggressive enough to flatten efficiently, yet refined enough to leave stones cutting cleanly and evenly.

This plate is especially well suited for regular pre-sharpening touch-ups, making it easy to maintain stone flatness with just a quick 10–15 second pass. Users consistently note how effective it is for truing mid- and lower-grit stones without over-smoothing them, and many also use the back of the plate as a reference surface to check edge profiles. It’s a practical, budget-friendly alternative to higher-priced diamond plates and an essential tool for anyone sharpening regularly.

Care Instructions: Splash water onto both the plate and stone before use. Mark the stone with a pencil and rub in circular or cross-hatch motions until the marks are removed. Rinse the plate after use to clear swarf and dry thoroughly before storage. Use light pressure and allow the diamonds to do the work.



  • Grit: 140 (coarse)
  • Dimensions: 8" x 2.75"
  • Use: Stone flattening, chamfering, quick metal removal
  • Best for: Routine maintenance of low- to mid-grit stones
  • Cutting speed: Fast and efficient
  • Value: Excellent performance for the price

  • Customer Reviews

    Reviews

    11 review(s) WRITE A REVIEW (Reviews are subject to approval)
      Don't think twice. Get one!
    Posted By: Ryan C
    34 people found this review helpful

    These are priced as they should be and are perfect for truing stones. It does leave scratch marks at first but after a little breaking in my 6000 looks perfect. The back is also great for checking edge profile since it's so flat. Thank you, CKTG!

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      Good plate, great price
    Posted By: Matt F.
    36 people found this review helpful

    This was my first diamond plate and I was a little skeptical, but it's served me very well. It's handled a ton of lapping quite efficiently and I've sharpened with it too. For about the price of those small Naniwa SiC lapping stones it's a great value. If the Atoma seems a bit pricey go for it. Thanks to Mark for finding and offering it.

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      140 diamond flattening plate
    Posted By: JM8Land - verified customer
    26 people found this review helpful

    I like the plate and have had good success in flattening my silicon carbide norton stones. The only reason I didn't give an excellent was the limited amount of stones to flatten. I don't like the gouges it leaves on the higher grit stones. A 220 to 300 range at the 140's price range would be a great addition to your line-up. Maybe I'm a little impatient and the 140 needs some break-in to smooth out a bit. I like the product and would buy again (hopefully with a higher grit flattening plate). I will let you know when I get more use out of it.
    Thanks again.


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      Solid product
    Posted By: Amir Ahmadi
    42 people found this review helpful

    Got this in the combo pack the website offers. Great value considering the cost. I wasn't crazy about using it for thinning or setting a bevel. It did work for bread-knifing though. all that said, it glazes up a bit quickly. All in all solid product

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      Really a bargain
    Posted By: Matt
    40 people found this review helpful

    To be honest I thought there might be some compromise with such an inexpensive plate, but I used it today for the first time and it cut aggressively but left a beautiful smooth, flat surface on a King 1000 workhorse stone. Very pleased. I might get a fancier plate for the higher-grit stones but for the mid- and lower-grit ones you work hard this should be all you need.

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      Essential
    Posted By: Cory
    29 people found this review helpful

    This is a pretty important item.
    Works extremely well and I do at least a little flattening before every sharpening.
    I put a few magic marker marks on my stone and do circular patterns until most of the magic marker is gone.
    Definitely makes a difference.


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      Quick flattening
    Posted By: David Iannazzone
    36 people found this review helpful

    My stones needed some serious help. This made quick work of flattening to reusable shape.

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      Good, but not flat
    Posted By: Eric
    35 people found this review helpful

    The grit is fine and does what it needs to do, but my plate isn't perfectly flat. It's arched slightly so the middle of the plate is higher than the ends. This makes it sub-optimal for flattening stones with.

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      Cuts quickly
    Posted By: AJU - verified customer
    38 people found this review helpful

    This Stone quickly flattens my sharpening stones, little effort, excellent results!


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      bad product
    Posted By: ward c wilcox
    36 people found this review helpful

    This stone is so out of flat I sent it back after checking it with a straight edge. It had a dip in the middle of an !/8 '' or so. Unusable. I assumed it would be flat like the other one I bought and read reviews for this product and decided to check this 140 stone before I used it.

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    Posted By:
    34 people found this review helpful



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