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  • DMT DIA-FLAT Lapping Plate
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DMT DIA-FLAT Lapping Plate

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List Price: $212.17
Price: $184.57 & FREE Shipping. Details
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  • Precision ground and hand-certified flat to <+/- 0.0005-Inch
  • Aggressive surface to facilitate quick and easy flattening of conventional and Arkansas stones and waterstones
  • DMT Diamond Hardcoat Technology outlasts any other diamond coating on the market
  • Largest surface area of any diamond lapping plate - 40 square inches or 50% larger that other diamond lapping plates
  • Durable construction will provide years of consistent performance and reliable service. Made in USA
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2 new from $179.95 1 used from $140.00

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Frequently Bought Together

DMT DIA-FLAT Lapping Plate + Steelex D1091  Sharpening Stone Holder
Price for both: $202.67

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Product Information

Technical Details
Part Number DiaFlat
Item Weight4.3 pounds
Product Dimensions11 x 4.5 x 0.5 inches
California residentsClick here for Proposition 65 warning
Item model numberDIAFLAT
Item Package Quantity1
Warranty DescriptionGuaranteed against defects in material and workmanship
  
Additional Information
ASINB005FUHTDG
Best Sellers Rank #13,750 in Home Improvement (See top 100)
Shipping Weight4.4 pounds (View shipping rates and policies)
ShippingThis item is also available for shipping to select countries outside the U.S.
Date First AvailableAugust 18, 2011
  
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Product Description

Product Description

The Dia-Flat is designed to flatten all oilstones and waterstones. Flat to +/-0.0005 and coated with the revolutionary DMT Diamond Hardcoat Technology, the aggressive diamond coating makes short work of not only flattening any conventional oilstone or waterstone, but with a lighter touch, and is also the go-to tool for maintaining your stones as well.

From the Manufacturer

The DMT Dia-Flat Lapping Plate is designed to easily flatten all conventional and waterstones in less time than other methods. Using the new revolutionary DMT Hardcoat Technology this lapping plate outlasts any other diamond coating in the market. With a consistent, aggressive diamond surface and precision ground, hand certified flat to +/- 0.0005-Inch, the Dia-Flat assures rigid execution when flattening stones. Greater surface area for ease of use. Durable construction will provide years of consistent performance and reliable service. For proper tool maintenance, woodworkers, chefs, and other professionals rely on the superior quality and versatility of DMT products. Made in USA.

Customer Reviews

I was pleasantly surprised at the weight and quality.
Cobra
Previously, I used sandpaper, drywall mesh, and other diamond plates for flattening; each of these methods had drawbacks.
Mister The Plague
A good sharpening stone can cost a lot of money and at some point they will need to be trued.
elithian

Most Helpful Customer Reviews

22 of 23 people found the following review helpful By elithian on November 8, 2011
Verified Purchase
Many of the reviews listed are for products that are not the "Diaflat". The Diaflat is a 10x4 inch diamond truing tool for water stones and other grinding equipment. I bought it after reviewing the information on it, listening to Charles Shwarz's review, author of "The Anarchist Tool Chest", and finding the best price. Expensive, yes, but the promise of superior performance for and extended period of time offers long range saving in both time and money. A good sharpening stone can cost a lot of money and at some point they will need to be trued. This is the ideal tool for that short of having high grade professional equipment. It is great for those of us who don't want to spend our time truing stones so we can sharpen tools with precision. The bottom line is this tool is for those of us who take sharpening to the next level; art.
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18 of 20 people found the following review helpful By findelarue on December 9, 2011
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My hobbyist woodworking career encompasses nearly forty years. In all that time I have been trying to get the ultimate "sharp" on my chisels and plane irons. Sometimes I have spent as much time sharpening as actually building a project. Today, it all came together. I put a grid on my 1000 grit waterstone that was supposedly flat and by golly it took 10 minutes to get the grid worked off with my new DMT stone. I literally was taken aback. After flattening I put a chisel through my normal process for sharpening as taught by Deneb Puchalski on the Lie Neilsen video and it happened; the ultimate sharp! The micro bevel is perfect, the chisel is absolutely square and it shaves off end grain like a knife through butter only better. I'm a believer....by all means it's expensive but it does get a tool sharp and as the previous reviewer states " It takes sharpening to an art form." If you want the ultimate sharp, this is the lapping stone to get!
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21 of 24 people found the following review helpful By Jason Weaver on February 4, 2012
Verified Purchase
I can't say enough about this new DIA-FLAT from DMT.

Having previously used an XXCoarse DIA-SHARP (D8XX) to flatten my Norton waterstones, the DIA-FLAT has taken an already decent product and improved it on several fronts.

SIZE: This massive 10" by 4" plate is much bigger than the various sharpening stones on the market (and much bigger than my D8XX that is only 8" by 3"). This allows you to move your sharpening stone around without ever leaving the edges of the DIA-FLAT.

WEIGHT: The biggest surprise is the weight of the DIA-FLAT, at 4 pounds it is 50% heavier than the 2.7 pound D8XX.

SURFACE: The DIA-FLAT shares the D8XX's coarseness of 120 microns, but instead of being clumped in a series of small circles -- the entire services is coated with 30 carats of diamonds (3/4 carat per square inch!) with a guaranteed flatness within 0.0005".

BOTTOM LINE: The DMT DIA-FLAT makes it simpler than ever to achieve and maintain a truly flat sharpening stone, assuring a better sharpening experience -- and more importantly, a better experience using your sharpened tools and/or utensils.

ONE TIP FOR USE: If you are someone who uses several sharpening stones (coarse to fine) to achieve a polished, even edge -- make sure to run your DIA-FLAT under running water and thoroughly rinse off the particles from one stone before moving to the next, so as to prevent cross contamination. This is difficult to do, but it is a necessity if flattening more than one stone.
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7 of 7 people found the following review helpful By N. Lam on November 23, 2013
This is a great tool. I only wish it didn't cost 160+ dollars. I bought this earlier on in the development of my sharpening obsession (slight exaggeration). As I gained more experience, I learned that though this tool is pretty awesome, the alternatives are incredibly cheap and equally effective. Now I use a granite tile from home depot ($4 and very flat) and cheap adhesive sandpaper ($12 a large roll) to lap my Naniwa Chosera Stones. The benefit of the Dia-flat lapping plate is that it is very easy to use, it is up to you if it justifies the pretty astronomical cost. Personally I wish someone would've showed me the granite method and I spent the money on a high quality japanese water stone rather than a very respectable lapping plate (mine eventually wore out).
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6 of 6 people found the following review helpful By saycheese on April 1, 2013
Verified Purchase
This is the third Dia-Flat plate I've bought. I keep one handy for all situations. For flattening Japanese water stones this is the only way to go. You will save hundreds of dollars in expensive carborundum sandpaper in the first 3 months. And this sucker is F-L-A-T!!! Don't sharpen carborundum stones with this though, it will cut the diamond surface height down. All other stones work awesome with this plate. I can't say enough great things about it.
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8 of 9 people found the following review helpful By Mister The Plague on June 29, 2012
Verified Purchase
I've owned the Dia-Flat for a few months, and can say without reservation that it flattens waterstones flawlessly, and can even be used to lap smaller tools. Previously, I used sandpaper, drywall mesh, and other diamond plates for flattening; each of these methods had drawbacks. Sandpaper wears unevenly, and can be tricky to use without unevenly abrading whatever surface you're working as well. Flattening water and oil stones brought about the early demise of a couple of my regular DMT diamond plates. The most sensible explanation I've encountered for this is that the loose particles from the stone can wear away the regular diamond plate's nickel coating. This doesn't happen with the Dia-Flat. The only drawback to the Dia-Flat is its price, but in this case as in so many others you get what you pay for.

I place the Dia-Flat on a stand made by DMT in my kitchen sink and flatten stones on it under running water. Rinse any remaining grit from the Dia-Flat between stones. One tip for flattening polishing stones is to back off your pressure after the stone is flat, and lightly abrade the surface of the stone before use. DMT includes this tip in the instructions, and it works.
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