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Suehiro

SUEHIRO GMN200 Whetstone GOKUMYO Series 20000 Japanese Knife Sharpner Super Finishing Stone

4.7(15)
$264.99

1683+ bought in the past month

About this item

  • Product No. GMN200
  • Super Fine Finishing Whetstone grit #20000
  • Whetstone Size 8.07×2.87×0.79 in
  • Whetstone Surface Restorer, “Dual Cleaner” (Included)
  • This well-made whetstone has a dense concentration of ultra-fine air pockets and can be used immediately by lightly wetting it. Before using the whetstone, either briefly submerge it in water, or wet the surface with your hand, then begin sharpening. Under normal circumstances (summer or winter temperature variations, immersion in water), there is no risk of a loss of quality. It can be used in the same manner as conventional (kiln-fired) whetstones.
  • To maintain the stone’s ability to sharpen, please clean the whetstone with water and restore the surface with the restoration stone included in the set after each use.

Key details

color_spec
White
Brand
Suehiro
Color
White
Grit Type
Super Fine, Ultra Fine
Number of Items
1

Technical specifications

item_model_number
GMN200

Item information

Manufacturer
SUEHIRO
grit_type
Super Fine, Ultra Fine
number_of_items
1
best_sellers_rank
#788,142 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #2,543 in Knife Sharpeners
is_discontinued_by_manufacturer
No
date_first_available
December 14, 2014
Highlights

About this item

  • Product No. GMN200
  • Super Fine Finishing Whetstone grit #20000
  • Whetstone Size 8.07×2.87×0.79 in
  • Whetstone Surface Restorer, “Dual Cleaner” (Included)
  • This well-made whetstone has a dense concentration of ultra-fine air pockets and can be used immediately by lightly wetting it. Before using the whetstone, either briefly submerge it in water, or wet the surface with your hand, then begin sharpening. Under normal circumstances (summer or winter temperature variations, immersion in water), there is no risk of a loss of quality. It can be used in the same manner as conventional (kiln-fired) whetstones.
  • To maintain the stone’s ability to sharpen, please clean the whetstone with water and restore the surface with the restoration stone included in the set after each use.
Details

Materials and maintenance

material
Ceramic
dimensions
8.07"L x 2.87"W x 0.79"H
weight
2.65 pounds
Product Dimensions
8.07"L x 2.87"W x 0.79"H
Item Weight
2.65 Pounds
product_dimensions
8.07"L x 2.87"W x 0.79"H
item_weight
2.65 pounds

Product videos

Product video 1

Customer reviews

15 reviewsPositive

Rated 4.7/5 across 15 reviews — highly regarded by customers.

  • 71% of sampled reviews are from verified purchases.
  • 100% of sampled reviews give 4–5 stars.

Customers say

Customer summary is not available yet.

Reviews with images

Customer review image for A perfect finishing stone for extra sharp knives’ lovers.Customer review image for Superb Straight Razor Finisher
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★★★★★

From BESS 140 to BESS 60, HRC 63 steel

Silky smooth with very nice feedback With just 20 light strokes, my 6" stainless HRC 63 utility knife went from around 140 BESS to 60 BESS, so I'd say that for aficionados of "let's see how sharp I can get it", this stone is well worth the price. I have yet to try other knives, so this review is just a first blush thing, but the 6" had been sharpened on 12k and stropped with 0.5 micron diamond spray. I think I had it to 120 BESS, and I had used it twice, so I tested once before and after for this stone. Another reviewer said to be sure to have a well-done smooth bevel on 10k or 12k before going to this 20k, and that makes sense (always try to use the proper grit). This 20k stone does load up a bit, like other high grit stones, and I can easily live with that since, so far, it's plenty fast enough. It does not feel "hard and unyielding" at all, so that part is a delight. Obvious note: your proficiency should not be questionable or you just kind of waste the potential and money, but so far, I'm concluding that no strop will substitute for a really fine stone. This is the highest grit I've tried. Read more

DapperdobbsVerified purchase
★★★★★

A perfect finishing stone for extra sharp knives’ lovers.

I first bought 800/3000 Naniwa Chosera stones. Then I wanted to see how sharper i go up with my knives. As a result I bought a Naniwa 10000. With it’s appearance my knives got even sharper. And as a true Russian I thought to myself, all right, my knives are extremely sharp, but can they still be sharper? There came Suehiro GMN 20000. It is a great stone! And It does add value to your sharpening result. Just a small remark for knife sharpeners: a good flattening stone is a must! If you want your sharpening process be a pleasure, get yourself a good one. You will be surprised how curved your sharpening stones are, which has a serious negative impact on the end result. Every now and then I flatten my stones to get the best from them. Enjoy! Read more

Customer review image for A perfect finishing stone for extra sharp knives’ lovers.
Konstantin LynovVerified purchase
★★★★★

Smooth As Glass:

This is my smoothest synthetic stone that I have in my collection. I have been sharpening straight razors off and on for the past 7 years. This specific stone is my best synthetic stone hands down. It's a "splash and Go" stone which means that there's no 15 to 30 minute wait time so you can get started right away. The polish that this stone leaves behind is epic and the slicing capabilities is second to none. Read more

Stephen DavidsonVerified purchase
★★★★★

Same or better, certainly easier/more consistent than a JNAT

I did purchase this from another source but I’m bored so I figured I’d review it here as well. I use this to finish my straight razors. Let’s just say I own some really nice JNATS, Ozuku, Shobudani, etc. and I stopped using them after trying this stone. I have been honing for 3 years and have done hundreds of honing sessions. This stone ended my hone addiction :). I do a simple progression of 1k, 3k, 8k, 12k, then this 20k and consistently get the same or better than buttery smooth edges than I have ever gotten from my best JNATS. It literally just takes 10 or 11 weight of blade x-strokes. Knocks off more than a half hour of honing and vigorously rubbing a tomo nagura to generate a slurry on the hard JNAT. Yes it’s more satisfying on a JNAT but I just can’t believe how good the edge is. It’s like the whiskers are not there. You have to bring a completely maxed out 12k edge to this stone but you will be rewarded. Read more

Amazon buyer
★★★★★

Amazon finisher

(Firstly disclaimer, I didn't buy the stone here on Amazon as I found a much better price on eBay) The stone arrived not quite flat - flattening it took quite a long time with a Shapton glass diamond lapping plate (it is a very tough stone). But, eventually I ended up with a surface as smooth as glass. You end up with a kind of ultra fine grit man-made 'coticule'. Very simply, it puts an incredible edge on a straight razor as finishing stone (using the running water trick). Smoothest shaves ever, it just glides through my extra tough whiskers. Robert Read more

Betsy W.
★★★★★

straight razor finisher

This is especially good for straight razors with extra hard steel. Read more

peteVerified purchase
★★★★★

Superb Straight Razor Finisher

This waterstone is very easy to use as a final finisher. It tends to load up and glaze fairly quickly, but a very nice cleaning stone is included. This stone produces a very edge quickly. For those with patience, I prefer my Dan’s Black Arkansas, which costs less, but produces a keener edge. So take a look at that option too. Dan’s Black Ark is much slower, so more time and patience is required. Read more

Customer review image for Superb Straight Razor Finisher
J in TxVerified purchase
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