The 12 Best Extra Coarse Diamond Stones (2022 reviews)

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If you are looking for collection of best extra coarse diamond stones, You have come to the right page.

Our review process:

Our Top Picks:

Best Overall:
Buy: Ultrasharp Diamond Sharpeners First Set
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Best For Dull Knives:
Buy: Lansky Extra Coarse Diamond Stone
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Best For Non Slip:
Buy: Sharpal Extra Coarse Diamond Stone
READ REVIEW

Best With Aluminum Oxide:
Buy: Dmt Diamond Machining Technology Diamond Stone
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Best For Blade Edges:
Buy: Dmt Diamond Machining Technology Extra Coarse Diamond Stone
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Best For Bottom Line:
Buy: Trend Extra Coarse Diamond Stone
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Best For Touching Up Edge:
Buy: Diamond Machine Technology Dmt Extra Coarse Diamond Stone
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Best For File:
Buy: Lansky Diamond Stone
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Best For Axe:
Buy: Schaaf Wood Carving Tools Extra Coarse Diamond Stone
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Best For Any Size Knife:
Buy: Diamond Machine Technology Dmt Diamond Stone
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Best For Ceramic Knives:
Buy: Ultrasharp Diamond Sharpeners Extra Coarse Diamond Stone
READ REVIEW

Best For Carbon Steel Knives:
Buy: Dmt (Diamond Machining Technology) Extra Coarse Diamond Stone
READ REVIEW

Best Overall: Ultrasharp Diamond Sharpeners First Set

Ultrasharp Diamond Sharpeners First Set
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The Ultrasharp Diamond Sharpeners First Set might be a relatively new release, but it's still nothing short of impressive in this year, thanks to multiple price cuts and improved features over the past few months. The ultrasharp diamond sharpeners first set is designed to worth every penny, is super flat and it is great for planes. 8" x 3" - extremely fast 300, 600 and 1200 grit diamond sharpening stone set. In addition, this stops wasting time and it is good for a lifetime warranty.

The stone is attractive and it is perfect for good size. Most importantly, the ultrasharp diamond sharpeners first set is enjoyable, is made in great size and it is brand new.

Most buyers opine that the stone takes some effort but soon they are good as new. Also, a few say that the stone is perfectly flat on sturdy metal bases. Moreover, they say that the stone makes sharpening so much faster and easier. In conclusion, the tone of buyers is very positive and we believe that the stone suits the purpose.

Top Customer Quotes:
  • This will sharpen everything and quickly.
  • This works for the intended application.
  • These features make the stones reliable, durable and an exceptional value.
  • The best value we've ever seen!.

Best For Dull Knives: Lansky Extra Coarse Diamond Stone

Lansky Extra Coarse Diamond Stone
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Next on the list, we've got yet another stone that manages to win our hearts. It's the Lansky Extra Coarse Diamond Stone and it's widely considered as the stone that has the most suitable features. The lansky extra coarse diamond stone works perfectly and it is serviceable. Make sure this fits by entering your model number. Further, the stone makes for a great buy and it works fast.

Most importantly, the lansky extra coarse diamond stone is great for customer service, is good for the country of origin and it is very happy.

Most customers found that the stone takes off a bunch of metal with ease. Also, a few say that the stone works well on hardened knives. In addition, a few strongly agree that the stones are ready for the medium and fine whetstones. Without any doubt, this product passed the test and had very satisfied buyers eager to share their experience.

Top Customer Quotes:
  • This comes with an extra alignment rod.
  • This is triangular and it is used for fast cutting.
  • This allows for good tool and it saves so much time.
  • OK, you're gonna use a lansky sharpening jig.

Best For Non Slip: Sharpal Extra Coarse Diamond Stone

Sharpal Extra Coarse Diamond Stone
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Compared with other stones in this category, the Sharpal Extra Coarse Diamond Stone has a convenient design. The sharpal extra coarse diamond stone is great for customer service, it is great for the price and has a special design. Sharpal exclusive mirrorflat technology guarantees long-lasting contact with knives or tools, while oil stone and water stone easily wear down with uneven surface. And, the stone is good to go, It is golden and has a safe design.

The stone is used for double sided with coarse, It is great for quick response and has a very good design. In addition, it allows for fast cutting, is super flat, it is worth the cost and has a beautiful design. Most importantly, the sharpal extra coarse diamond stone is designed for super flat surface, It is very happy and has excellent design.

Most customers quickly discovered that the stone is done quickly, during a “walking dead” commercial break. And, they strongly agree that the stone is very good at sharpening broadheads. Further, a few strongly agree that the only flaw with this whole system is that the angle guide does n't fit inside the case with the stone.

Top Customer Quotes:
  • This is an excellent diamond stone for the price.
  • This comes with a sharpening angle guide integrated with 4 universal angles-14, 17, 20, 25.
  • This stone is of incredible value and will work for a long time.
  • This is used to sharpen axes, knives, chisels and drill bits.

Best With Aluminum Oxide: Dmt Diamond Machining Technology Diamond Stone

Dmt Diamond Machining Technology Diamond Stone
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The DMT diamond machining technology diamond stone gives the top-tier stones a run for their money by offering flagship specs at a much more affordable price. The DMT diamond machining technology diamond stone is offered in Dmt’s hardcoat diamond surface, specifically designed to withstand the rigors of ceramic knife sharpening. Use leafing (paper towels, cloth, plastic storage bag) in between your bench stones to prevent abrasive sides from rubbing. This stone is capable of handling a wide variety of edges with industry - leading precision and accuracy.

The stone restores neglected edges and also can also be used with DMT’S bench stones. Moreover, the stone stays flat, it is very happy and has a practical design. Above all, the DMT diamond machining technology diamond stone features two sides of 6-inch by 2-58-inch interrupted diamond surface sharpening.

Almost all customers opine that the stone comes in handy for the blade tip. Further, they strongly agree that stone is the best sharpening system for the effort and cost. And, they strongly agree that the stone makes for very challenging control.

Top Customer Quotes:
  • This offers micronized monocrystalline diamond and most offer the lesser grade poly-crystalline diamond.
  • Sharpens knives faster than conventional stones with DMT'S monocrystalline diamond surface.
  • This is good for all sizes of knives and tools... kitchen, pocket, to machete.
  • It is easy to flip the stone from one side to the other.

Best For Blade Edges: Dmt Diamond Machining Technology Extra Coarse Diamond Stone

Dmt Diamond Machining Technology Extra Coarse Diamond Stone
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We know from years of feedback from readers, amazon sellers, and family and friends what most people want in a convenient and appropriate stone. The DMT diamond machining technology extra coarse diamond stone is exactly that - it's a simple stone that hits all the right notes. The DMT diamond machining technology, extra coarse diamond stone will feel especially rough but will smooth over time without impacting performance. The Manufacturer says: Our honing tool includes non-skid rubber feet and the diamond grade is clearly marked on the side. Moreover, the stone includes interrupted, continuous and one duosharp model in hardcoat diamond.

Finally, the DMT diamond machining technology extra coarse diamond stone is committed to providing excellent diamond sharpeners in the marketplace.

Most customers opine that the stone will knock off the few high spots and flatten them out. And, a few strongly agree that the stone makes quick work of flattening the face of old plane irons. Moreover, they strongly agree that the stone has done its job beautifully. Overall, the tone of buyers is very positive and we believe that the stone suits the purpose.

Top Customer Quotes:
  • This can also be used with DMT’S bench stones.
  • These make the best true diamond grit stones out there.
  • This is great for a great price, cuts very fast and it is spade.
  • These include diamond whetstone, duosharp and dia-sharp bench stones.

Best For Bottom Line: Trend Extra Coarse Diamond Stone

Trend Extra Coarse Diamond Stone
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The Trend Extra Coarse Diamond Stone should be able to handle its purpose and duties with ease. The trend extra coarsediamond stone is meticulous and it is perfect for getting back to work. Make sure this fits by entering your model number. Also, the stone is designed with a non-slip mat and it works with incredible results.

The stone is highly recommend, has light pressure and it is made for the bottom line. And, the stone is double - sided and it does a great job. Above all, the trend extra coarse diamond stone is great for customer service, is built for price point and it lasts longer.

Almost all customers agree that the stone also has a consistent scratch pattern for the 300 grit side. In addition, they also found that the stone is a decent, inexpensive dual - sided diamond lapping plate. Moreover, a few say that the trend stone has a more uniform coating of diamonds and the metal block has squared edges instead of slightly rounded edges.

Top Customer Quotes:
  • This is the perfect size for sharpening plane blades and chisels.
  • Precision flatness: use with no pressure.
  • This can be used by thousands of extremely happy users.
  • Diamond grades: marked on stone; extra fine grit of 1000; coarse grit of 300.

Best For Touching Up Edge: Diamond Machine Technology Dmt Extra Coarse Diamond Stone

Diamond Machine Technology Dmt Extra Coarse Diamond Stone
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Diamond Machine Technology DMT is known for creating pragmatic and minimalist stones for people on the go, and its line of Diamond Machine Technology Dmt Extra Coarse Diamond Stone definitely falls in line with that reputation. The diamond machine technology DMT extracoarse diamond stone is great for skiing and it is highly recommend. The Manufacturer says: Our innovative recessed dot pattern is the key to the DMT difference. Moreover, the stone is great for ultra fine and it is great for flat surface.

Finally, the diamond machine technology DMT extra coarse diamond stone is great for brand name and it is brand new.

Almost all buyers found that the stone is good for sharpening knives. Further, they say that the stone is great for touching up the edge. Further, they also found that the stone has held up to moderate high use the four years. To sum up, the tone of buyers is very positive and we believe that the stone suits the purpose.

Why We Like This:
  • This is great with fast shipping and it is convenient to carry.
  • This restores neglected edges. Additionally, it is needed to dry or with water.
  • I bought an extra-fine diamondstone (9 micron / 1200 mesh) polishes and refined edges.
  • Sharpens knives faster than conventional stones with DMT'S monocrystalline diamond surface.

Best For File: Lansky Diamond Stone

Lansky Diamond Stone
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Lansky is known for creating pragmatic and minimalist stones for people on the go, and its line of Lansky Diamond Stone definitely falls in line with that reputation. The lansky diamond stone is for flat surface and it does a great job. Make sure this fits by entering your model number. The coarse 120 grit diamond hone is perfect for repairing and sharpening a very dull edge.

The stone is designed to worth every penny and it works quickly. In addition, it saves time and it works fantastic. Lastly, the lansky diamond stone is designed for use with the lansky controlled angle sharpening system.

Most customers agree that the stone is a great stone to use to take out knics before sharpening. In addition, a few also found that the stone really does work much faster than a standard stone. In addition, a few strongly agree that the cheaper stone that forms a groove by cutting longer, or the diamond stone that that does n't form a groove but does n't last as long. Consequently, buyers were very happy to recommend it to friends and families.

Top Customer Quotes:
  • The coarse stone provided does a good job with softer steels, i.e.
  • Brass threaded insert for stainless steel thumb screw.
  • This is really nice and it removes metal quickly.
  • This is ideal for modern, wear resistant tool steels.

Best For Axe: Schaaf Wood Carving Tools Extra Coarse Diamond Stone

Schaaf Wood Carving Tools Extra Coarse Diamond Stone
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The schaaf wood carving tools with extra coarse diamond stone is capable of outshining several other stones featured in this list in overall features for the price point. The schaaf wood carving tools with extra coarsediamond stone are excellent for sharpening chisels, is very happy and I bought them again. Elevates your diamond stone above the bench, making it easier to sharpen certain tools. Further, this is great for customer service, Go to youtube and it is made worth the price.

The stone is good for lifetime warranty, is best for a good deal and it is perfect for high quality monocrystalline diamonds. Further, this gets it done and it is totally flat. Finally, the schaaf wood carving tools with extracoarse diamond stone is highly recommend, is good for an excellent price and it is very impressive.

Almost all customers agree that the stone is a great "bang for your buck. Also, a few also found that the stone takes material off quickly and effectively. And, they say that stone is the best choice for wood chisels or knives to establish an edge, then finish with a quality water stone or arkansas. So, buyers were eager to recommend it to friends and would-be buyers.

Top Customer Quotes:
  • The weight and size of the schaaf diamondstone greatly helps with that technique.
  • This is adjustable, so it works with other sharpening stones as well.
  • This plate will pay for itself in a month or two.
  • This is very flat, imo flat enough for chisel backs, plane irons and the like.

Best For Any Size Knife: Diamond Machine Technology Dmt Diamond Stone

Diamond Machine Technology Dmt Diamond Stone
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If you often find yourself scrambling for convenient and suitable stone, Diamond Machine Technology Dmt Diamond Stone is your solution. The diamond machine technology dmt diamond stone is designed to be used dry or with water, so there are no messy oils and extensive clean up to worry about. Start with a coarser grit for damaged or dull edges and work to finer grits. This innovative stone offers a multi - patented sharpening surface that features a convenient dual - sided design for sharpening.

The stone provides unparalleled performance thanks to its monocrystalline diamond surface, which sharpens faster and more efficiently than other sharpeners. Lastly, the diamond machine technology dmt diamond stone fast too, It is more durable and has a dual grit design.

Most buyers found that the stone is a general review for all 3 of the dmt 10. In addition, they strongly agree that the stone is great for sharpening hand plane blades, and smaller blades as well. Moreover, they say that this is a nice big stone, with lots of area to work with. Overall, the tone of buyers is very positive and we believe that the stone suits the purpose.

Top Customer Quotes:
  • This is superior to old school oil stones.
  • This is great for axes and other large garden tools.
  • It does take a month or so to receive a replacement stone, however.
  • These include diafold, mini-sharp, 4” diamond whetstone.

Best For Ceramic Knives: Ultrasharp Diamond Sharpeners Extra Coarse Diamond Stone

Ultrasharp Diamond Sharpeners Extra Coarse Diamond Stone
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Not everyone likes to purchase stone for their daily purpose, but the Ultrasharp Diamond Sharpeners Extra Coarse Diamond Stone would be an anomoly. The ultrasharp diamond sharpeners extra coarse diamond stone cuts well, is made well and it cuts very nice. The Manufacturer says: We've tested every diamond sharpening stone made and the ultra sharp performs as well or better than any of them. The coarse 300 grit surface quickly repairs worn or damaged edges.

Finally, the ultrasharp diamond sharpeners extra coarse diamond stone is great for customer service and it buy again.

Almost all customers found that the stone was a great diamond plate for a very reasonable price. Also, a few also found that the stone has an acceptable break in period. Also, a few also found that the stone has a lifetime, no questions asked, warranty. Overall, buyers found this to be one of the best stones for daily purposes.

Top Customer Quotes:
  • This ultra sharp diamond stone is as good as the dmt used to make them.
  • This sharpener puts a fine sharp edge on a blade quickly.
  • 8" x 3". Quickly sharpens all knives and tools (including ceramic knives).
  • This allows for a lifetime warranty and it can start with an extra course.

Best For Carbon Steel Knives: Dmt (Diamond Machining Technology) Extra Coarse Diamond Stone

Dmt (Diamond Machining Technology) Extra Coarse Diamond Stone
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We would, of course, be remiss if we didn't mention Dmt (Diamond Machining Technology) Extra Coarse Diamond Stone for daily usage. The dmt (diamond machining technology) extra coarse diamond stone fits dmt aligner knife sharpening kits. Make sure this fits by entering your model number. Further, the stone is always flat and it is perfect for rough sharpening.

Most importantly, the dmt (diamond machining technology) extra coarse diamond stone is great for customer service, is very polished and it is nice little.

Most customers opine that the stone is where things get relative. Further, they strongly agree that the stone is great as honing steel replacement. Further, a few strongly agree that this burr is not visible at high grit levels and the stones are so smooth that they almost feel like nothing is there. Overall, buyers found this to be one of the best stones for daily purposes.

Top Customer Quotes:
  • This is superior in function compared to a water stone.
  • This is a sweet little stone, eef 8000 grit.
  • This is probably not the case, so stop reading and buy this stone.
  • This is starting to polish like an 8000 grit hone should.