Jende Artisan Mall – Just One of the Changes at Jende

May 27, 2016

We’ve recently made some serious changes to our website! www.jendeindustries.com has gotten a long overdue upgrade and is now on a much more powerful and versatile platform! One of the major changes is the addition of the Jende Artisan Mall. The Jende Artisan Mall is is a gathering place for amazing and talented artisans whose products and services compliment our own.  It’s best described as a farmers market. And like farmers markets, it’s populated with local and regional artisans who bring together the diversity, vibrancy, and creativity of the community under one roof.

Jende Artisan Mall

The Jende Artisan Mall is quite diverse, as we span a large area of all things sharpening. The purpose of the mall is to encourage our customers to discover a wider range of related artisans within the area or areas of their own interests. On the flip side, since many artisans prefer to concentrate on the quality of their products over marketing them, the Artisan Mall gives them exposure to a wider audience – and not just for exposure’s sake.

The major areas actually mirror those of the main Jende categories, and expand to more specific areas, such as custom knife makers, oboe and bassoon reed makers, shaving soaps, custom woodworking, and sharpening services, just to name a few. So we hope everyone will come by and check out the new site, and support the Jende Artisan Mall!

TOG Elite Japanese Kitchen Knives Review

April 25, 2016

We recently received a TOG Elite Japanese Kitchen Chef Knife Santoku for testing. Bottom Line: This is one very nice knife that handles well, keeps its edge, and just plain looks good.

TOG Elite Japanese Knives

TOG Elite Japanese Knives

 

On the TOG website, there is a “Tech Specs” page that lists all the wonderful, interesting, and even nerdy things about the knives.  I’ve decided that my review will focus around the claims on that page.

  • “TOG blades are made from a special steel… to produce the ridiculously sharp blade and ensure that it stays sharp.” 
  • “Incredible cutting performance from a central layer of high-carbon (1%) steel. This core is made from… Acuto 440 that is similar to Western ‘440C’. This is hardened to Rockwell Hardness (HRC) 58-60…”

As an OCD sharpener, any claims to sharpness are always met with (rolled eyes or yawn) “Oh, yes, it is.”  I then proceed to lick the entire edge of the blade  – twice.  :) The TOG blade, however, actually looked and felt surprisingly sharp upon checking the edge right out of the box – sharp enough for me to not employ the old tongue test. So I went straight to the paper cutting test, expecting a typical 240 grit with a buffed edge feel. I was shocked by my first cut, so much so that I took another slice into the paper just to make sure. This thing cut -no- SLICED through the paper in a way that was not the usual factory edge. This was much, much better. I was truly impressed. If I had to call the grit, I would say about 3K. Score 1 for TOG right out of the box.

Edge retention is always going to vary depending on the user and the tasks performed, but when I sharpened up the TOG to my usual angles and finish, it kept up as good as, if not a little better than my usual knives (RC57-58). The knives in the rotation were all freshly sharpened by me, and used in a professional kitchen over a 2 week period with no special treatment (believe me!), and were only adjusted with a sharpening steel by the sometimes brutish kitchen personnel.

Steel junkies say what you will about 440C, but the Acuto 440 steel in this blade is perfect at RC 58-60. IMO, RC 56-60 is the Goldilocks hardness zone for high quality, non-custom kitchen knives – hard enough to hold the edge so that it does not require steeling after every cut, and flexible enough so that the edge won’t chip out. RC 58-60 also makes maintenance on the edge easy and straight forward on just about any good quality sharpening equipment, be it a steel, stones or mechanized sharpeners. I used 220, 1K, and 4K sharpening stones and got a smooth edge with just enough bite. As a sharpener, I am quite satisfied with the quality.

As for the feel of the edge when in use, it actually felt more akin to VG-10 steel, and not even remotely close the soft mushy stuff that your 29-piece knife set in a woodblock has (usually RC ~52). The overall balance and handling of the knife was easy and light, and the thinness of the blade allowed for easy cutting and slicing.

So to sum it up, this is one very nice knife that handles well, keeps its edge, and just plain looks good.

Thank you to the fine people at TOG for the opportunity!

Breaking the Jende Ceramic Sharpening Steel

October 23, 2015

Talk to anyone who has a conventional ceramic sharpening steel and they most likely will only let you look at it from a distance – which is dangerous enough in itself – and you’ll never get to use it, of course. That is because ceramic sharpening steels are notoriously fragile, and have taken on the same stigma as the famed Ford Pinto, whose gas tanks famously exploded on the slightest impact.

Well, let me tell you – our Jende Ceramic Sharpening Steels can take some of the meanest looks out there, and even hold back the tears when getting a good verbal lashing.  The anti-break technologies incorporated into the handle, the rod and the tip allow the Jende Ceramic Steels to take a good beating, too. We’ve done a previous “bam bam bam bam bam” test, which can be seen here, and now we have done an official drop test, showing that it is now safe for your friends to at least hold your ceramic steel, even if they are not worthy of using it!

Now, as much as we’d like to, we are not claiming the Jende Ceramic Sharpening Steels to be indestructible. They employ anti-break technologies that are designed to allow the steel to stay intact if dropped accidentally, or if bumped into another object, etc. during the rigors of everyday commercial and/or home use. For due diligence, we escalated our tests to see what exactly it would take to break one of our steels, and this was the last known surviving picture of the poor Jende Ceramic Steel that sacrificed its life in the name of science. His name was Brian, after the bastard that killed him.

jende ceramic steel

 

We’re Fundraising for Breast Cancer Awareness Month! Donate and you can win a Chef Knife Roll!

October 8, 2015

Everybody here at Jende Industries loves breasts, but hates cancer. So we put together a fundraiser to celebrate Breast Cancer Awareness Month, and will donate 100% of the money raised to the American Cancer Society! For a donation of only US $10.00 you can enter to win a custom pink Jende Chef Knife Roll along with a matching chef’s coat from Chef Works! A winner will be announced November 1, 2015. You can donate at our fundrazr page, here: https://fundrazr.com/campaigns/812rAd  Our collaborators include Olga Liao of Creep Leather, Colin Brown of Model Mosa, Amanda Stuckey of Chef Works, Frans van der Lee of Chef’s Roll, and Nicko Salas of Chefs Talk. Even if you don’t want to win the bag, you can still donate! Thank you!

 

 

Microscope Porn: How To Post It Correctly

August 1, 2015

With all the microscope porn on many of the sharpening and honing social media and forums lately, there needs to be a more standardized way to document the magnification. There are many available microscopes on the market, and the stated magnification levels are all over the map – from 3x to 1200x. Ironically, having the magnifications in these settings is irrelevant because we can enlarge and magnify pictures for various viewing needs, which often contradicts the stated magnification. It is therefore more important to know and state the actual area or size of the picture.

This tutorial will help to solve some of the uncertainties about knowing what the actual size of your pictures are rather than the so-called magnification. Please keep in mind that this is not in any way a comment on the quality of any of the scopes mentioned here. They are all very good, and extremely useful learning tools.

So, the easiest way to know your picture’s dimensions at a given magnification is to simply take a picture of a ruler under your scope, and state the dimensions when posting pics. This could be a USB scope, a scope attached to your cell phone, an optical scope, etc..

Below is a Veho at  20x. The pictured area is 6mm wide by 8mm high.

1 Ruler 20x ~6mm high

Ruler 20x ~6mm high

5 Ruler 20x ~8mm wide

Ruler 20x ~8mm wide

However, the Veho at 40x is 10mm high by 13mm wide! According to the magnification, the image sizes should be smaller (in theory, 3mm high x 4mm wide), but clearly the USB scopes don’t magnify the same as the scientific ones do. Hence, the issues with stating magnifications vs. stating the actual size of the pictured area.

2 Ruler 40x ~10mm high

Ruler 40x ~10mm high

6 Ruler 40x ~13mm wide

Ruler 40x ~13mm wide

To take it a little further, here is the Veho at 200x, which is 1mm high by 1.5mm wide. This is hardly a 10 times or even 5 times magnification of the 20x or 40x above.

3 Ruler 200x ~1mm high

Ruler 200x ~1mm high

7 Ruler 200x ~1.5mm wide

Ruler 200x ~1.5mm wide

And lastly, the Veho at 400x, just to drive the point home.:) the picture is 0.75mm high by 1mm wide. Again, not the same ratio of magnification to the real size of the picture.

4 Ruler 400x 0.75mm high

Ruler 400x 0.75mm high

8 Ruler 400x ~1mm wide

Ruler 400x ~1mm wide

OK, so we get that part now.:) On scopes with software packages, you can measure out the dimensions, and even set a “bar,” which represents a specified length, much like a map has a scale in KM or miles. In the example below, famed razor honer Dr. Matt has set his Dino Lite scope’s bar to 50.0 microns, which can be seen in the lower left hand corner of the picture. That means the entire area of the picture, no matter how large or small on your screen, will be approximately 300 microns wide by 250 microns high, or 0.3 mm wide by 0.25 mm high. Dr. Matt’s microscope is quite nice, you’ll notice there is also more information on the top tabs of the picture, including the “magnification” and screen resolution in pixels.

Dr. Matt’s bar is 50 microns

While Dr. Matt’s image as-is is self explanatory, if he didn’t have the bar or tabs and was citing this picture for others, he would say something like “This picture was taken with a Dino Lite 900, and the picture dimensions are 0.3 mm wide by 0.25 mm high.” This way we all know for sure just how close we are to getting our eyes sliced opened.😀 BTW – stating the actual size of this picture makes Matt’s work even more impressive!

In conclusion, taking just a little time and a couple of pictures before hand to measure the actual size of your pictures will prove to be a more valuable asset to understanding what these pictures represent, and therefore make learning from them easier for the user, and for the rest of us in the peanut gallery. Thanks!

Ken Schwartz’s Corner Now On The Jende Industries Website!

July 7, 2015

With some restructuring of the Jende Industries website, we’ve finally grouped all of Ken Schwartz’s products into Ken Schwartz’s Corner! Now you can find your Nubatama Edge Pro Stones, CBN Emulsions, Kangaroo Strops, as well as your Diamond Bars all with one easy click (after easily navigating to the sharpening products on our home page).

Ken Schwartz’s products are arguably the highest quality around, and we’ve been carrying all of his products since day 1. He’s a mad scientist’s mad scientist, with a background in medicine and a bunch of other really smart things, and he’s single-handedly changed the way we use compounds in the sharpening world with his CBN and Diamond sprays and emulsions that now span a huge grit range – from 180 micron down to 0.025 micron, not to mention his introduction of Nanocloth as the preferred medium for sub-micron stropping – and it works well on the coarser grits, too!

Ken Schwartz circa 2011

We hope to be filling out the Ken Schwartz Corner with even more goodies shortly, so keep an eye out!

Jende Diamond Films vs. Tungsten Carbide Router Bits

June 29, 2015

We met up with our friend Greg the woodworker a couple months ago. He is actually very talented, and does a lot of testing and reviewing of new woodworking gadgets and tools for manufacturers. We got to talking about the sharpness and condition of his hand tools, and he took me up on an offer to sharpen up one of his chisels. Of course, I got a difficult one… Here’s the before and after pics.

Chisel Before

Chisel Before

Chisel After

Chisel After

With the success of my test by Greg, He promptly sent me a large pile of chisel and plane blades, some carbide tipped router bits, and a kitchen knife for good measure. The chisels and planes were easy enough, although they took some work. But the real challenge for me were the router bits. Carbide bits can only be sharpened with diamonds, and luckily I had some Jende Diamond Films on hand. It must be said that the Jende Diamond films are a general purpose film – and specifically in the case of these carbide bits, they are best suited for refreshing and conditioning the bits, and simply do not have the ability to remove or fix any chips. Most router bits cannot be repaired once chipped anyway due to the balance necessary for the bit to work and the usually tight overhang of the bit from its base.  But what can be done is the refreshing of the “corner” that the bit needs. Below are microscope pictures of the router bit edges, taken with a Veho 400 microscope. The actual size of the pictures are 1 mm wide by 0.75 mm high.

1. Before Dovetail

1. Before Dovetail

Picture 1 shows a dovetail router bit edge as it was received from Greg.  There is some roughness to the edge from use. The edge here is wavering. Since mechanized tools spin so quickly, ultimate refinement is not as important as creating a consistent shape of the edge as it impacts with the wood. Even though the Jende Diamond Films go as coarse as 80 micron (180 grit), I opted to begin with a 30 micron (500 grit)  film and finish with a 15 micron  (1,000 Grit) film. Because of the small size of the the bit, I used a 1/2″ wide piece of aluminum with some 6″ long PSA backed film that wrapped around the top of the aluminum to the other side, and basically made my own slip stone that would be easy to facilitate with the flatness of the dovetail bit as well as to manipulate around the curves of the cove bits. Here’s the picture of the slip stones after they crossed the finish line – 7 router bits later.

Diamond Slip Stones - After 7 Carbide Router Bits

Diamond Slip Stones – After 7 Carbide Router Bits

So by following the contours and angles of the bit, the 30 micron Jende diamond film packed an aggressive punch:

2. 30 micron Jende Diamond Film Dovetail

2. 30 micron Jende Diamond Film Dovetail

Not only are the scratches on the surface of the bit much finer, they are in the reverse direction. The edge of the edge is definitely much more “crisp” at this stage, with minimal chipping out at the edge as compared to picture 1. 30 micron is still pretty coarse in the grand scheme of things, and as mentioned before the shape is more important than the refinement. However, I usually take my mechanized edges up to 15 micron, or 1K. The 1K edge leaves a smoother finish, and the integrity of the edge stays intact better over time, IMO. Here’s the finished microscope shot:

3. 15 micron Jende Diamond Film Dovetail

3. 15 micron Jende Diamond Film Dovetail

The Jende Diamond Films can handle the carbide bits, and can give the edge another life or two.

Next up was a rather wide radius Cove bit. I did the same thing as the dovetail, only because of the rounded bit, I ran the slip stone along the curvature rather than running the bit across the surface of the film.

4. Before Cove

4. Before Cove

Notice the rounded edge of the edge. The Jende Diamond Films are perfect for taking the rounding out and refreshing the sharpness. Here’s the 30 micron results:

5. 30 micron Cove

5. 30 micron Cove

You can clearly see the original grinding lines that are perpendicular to the edge, and the 30 micron left to right scratches. Because of the rounded surface, it took a little longer to get the results I wished for. Also the carbide bits are slightly hollow ground from their original machining  processes, and my relatively flat slip stone needed to work a little more to get a nice radius on the edge. Picture 5a shows the result of the 30 micron film after just a little longer:

5a. 30 micron

5a. 30 micron

The original machining mark is quite noticeable now against the 30 micron scratches. The edge of the edge is also straight now. I finished with the 15 micron (1,000 grit) diamond film, and the results are quite similar to the dovetail’s, if not a little better:)

6. 15 micron

6. 15 micron

In conclusion, the Jende Diamond Films can handle carbide bits, and a whole lot more! One of the best features about these films is that with the PSA backing they can be used effectively as slip stones in almost any situation. The wide range of grits also allows for consistency from 80 micron (180 grit) all the way up to 0.5 micron (30,000 grit).

Here’s the finished bit:

Cove bit finished

Cove bit finished 1

Cove bit finished 2

Cove bit finished 2

Jende Ceramic Sharpening Steels under the Microscope

June 22, 2015

We wanted to document the speed and ability of our Jende Ceramic Sharpening Steels. Aside from having remarkable anti-break technologies in the tip and handles, they also actually work really well, as the microscope pictures will show. We freehand sharpened a couple of  Maestro Wu D-8 Nikiris (RC~58) from scratch and finished on both steels, and also demonstrated the speed of the steels by removing a chip on a customer’s custom Maestro Wu D-9 Damascus (RC~60). Pictures are with a Veho-400 USB Microscope, and the actual picture size is 1 mm wide by 0.75 mm high.

First, a picture of the steels – The white steel was difficult to see, so I also added a picture of a “dirty” section that had been used so the texture of the materials could be seen. Getting a picture of the black steel’s “dirty” section proved to be difficult as well. Basically, the surface of the steels is scaly looking, much like a reptile’s skin.

Jende Ceramic Sharpening Steels

Jende Ceramic Sharpening Steels

White Steel clean

White Steel clean

White Steel dirty

White Steel dirty

 Black Steel Clean

Black Steel Clean

Black Steel Dirty

Black Steel Dirty

For new sharpening, I generally start with an #80 Grit belt, followed by a #240 Grit belt, and follow with a #1,500 Shapton Pro stone. This is my “basic sharp”, and it will shave hair and juuust push cut. The picture below is the edge off the #240 belt, which is jagged, and usually has a significant burr, which is pictured in the picture below that.

1. 240 Belt A

1. 240 Belt A

 

2. 240 Belt B

2. 240 Belt B – notice the gem-like burr

I then cleaned up the edge on the #1,500 Shapton Pro stone, roughly 35 back and forth passes per side, followed by a series of about 15 single-sided strokes:

3. 1500 Pro A

3. 1500 Pro A

You can clearly see a micro bevel from the stropping strokes vs. the knife strokes. This is pretty much the result of using less pressure with single-sided strokes, and it helps put the apex on the edge of the edge. While some haters may have something to say about my lack of precision, in reality the micro bevel is only 0.04 mm high – meaning my variation is pretty darn low. What matters most is that my stropping/steeling strokes are consistent, which they are.

3a. 1500 Pro A Measured Variation

3a. 1500 Pro A Measured Variation

After the 1,500 Shapton Pro, I did 10 light, alternating strokes on the Jende White Ceramic Sharpening Steel:

5. White Steel A  x10

5. White Steel A x10

The result shows a noticeable increase in reflection at the edge of the edge, indicating some cutting/burnishing action. The apex of the edge has evened out a touch, but is still quite similar to the edge from the just the stone. The cutting test determined that the edge was more aggressive than that straight off the #1,500 Shapton Pro stone. The White Steel cut very quickly and aggressively, which is the way it’s meant to.

I then sharpened up a different D-8 on the belts followed by the #1,500 stone in the same fashion, and then went straight to the Black Steel and did 10 light, alternating strokes:

7. Black Steel A x10

7. Black Steel A x10

As my micro bevel shows, I am pretty consistent from knife to knife. But back to the point – the difference here from picture 3 above shows noticeable cutting/burnishing of the bevel, but less than that found in picture 5 from the White Steel – which is the way things are supposed to happen. More importantly, the edge of the edge smooths out, and the cutting test produced a practically indistinguishable result from the #1,500 Shapton Stone. That’s friggin’ impressive because my results off the #1,500 Shapton Pro are very difficult to beat.😀

For the next trick, I used a customer’s D-9 Damascus (RC~60) that came in for sharpening. There was a nice little chip in the edge which would’ve been easy enough to remove on the stones and belts, but I wanted to see how many licks it would take with the steel to get to the center of this chip. I also measured the “gap” along the way. Here is the “before picture”, and the same picture below it with the measurement of the width of the chip:

10a. Chip Before

10a. Chip Before

10. Chip Before

10. Chip Before

Then, with 10 strokes of the White Steel: I used what I would call an aggressive amount of pressure since I knew I was trying to fix the chip. Again, the picture followed by the same picture with the measurement. The chip which initially took up the majority of the screen width at 0.77 mm, was now only 0.46 mm – generously. The deepest part of the chip was about only half of that.

11a. Chip white steel x10

11a. Chip white steel x10

11. Chip white steel x10

11. Chip white steel x10

 

Then I did 10 more aggressive strokes on the White Steel, bringing it up to 20 strokes. Only the deepest part of the original chip remained, with a width of only 0.24 mm.

12a. Chip white steel x20

12a. Chip white steel x20

12. Chip white steel x20

12. Chip white steel x20

 

I followed this with a third round of strokes, bringing the total up to 30. There was no real evidence of the chip left at this point. I looked up and down the blade for any other indications of the chip, and there were none.

13. Chip white steel x30

13. Chip white steel x30

In keeping with the mentality of these steels, the White (Mohs 9) is the aggressive steel while the Black (Mohs 8) is the finishing steel. I then took 10 light, alternating strokes on the Black Steel.

 

14. Black Steel Final x10

14. Black Steel Final x10

I’d say this looks pretty freakin’ good! At a macro level, you can visibly see the micro bevel from the steeling (picture size is 13 mm wide by 9.75 mm high, and the actual micro bevel is approx. 0.22 mm wide). And because of the geometry behind the edge is still established and intact, the knife actually still cuts very smoothly despite it not being a 5K edge anymore.

15. D-9 Macro Black Steel Final

15. D-9 Macro Black Steel Final

Overall, the Jende Ceramic Sharpening Black and White steels can do quite an amazing job of maintaining knives – and can even handle small chips. More importantly, when used in conjunction with one another, they can help your knife maintain its edge for an extended period of time before needing a full resharpening.

The Magic Flute and Knives – Mozart’s Opera Masterpiece Made Better by Jende

June 17, 2015

Many people don’t know (but they will in a second!) that the very first opera I ever played was Mozart’s The Magic Flute my freshman year in college. It has a special place in my heart because I played second clarinet to my teacher at the time, Roger McKinney. Aside from that, I was never much of an opera fan because the stories are just too complicated to follow (but here’s the Cliff’s notes version), and while Die Zauberflöte is dear to me, I never saw it because I was sitting in the back row under the stage in the pit in college, and I never watched or listened to it since (except for The Queen of the Night’s Aria when soloists sang with the orchestra).

Well that all changed this past week. The Kaohsiung City Spring Arts Festival featured a full blown opera production of, you guessed it, Mozart’s The Magic Flute. It’s been a while since a professional level staging of an opera or ballet was done in Kaohsiung, so I was happy to secure tickets to finally see the show with my children some twenty-odd years later! It is common for outside talent to be brought in for the major solo parts, in this case The Queen of the Night, Papageno, and Sarastro were performed by famed Hungarian Colorarura Erika Miklósa,  American Baritone Philip Cutlip, and American Bass Jeremy Galyon.

Whenever soloists come through Kaohsiung, a group of us try to meet up with them for coffee or dinner to help with the some of the culture shock, and to give them a real taste of our wonderful little city instead of being carted around to the touristy places by overworked and underpaid cultural department workers.:) And this time we hit the jackpot – There was some interest in knives as gifts, so we suggested they swing on by our new workshop to see what all the fun was about. I can’t give all the juicy details of the fun we had without having to kill you, but we showed them EVERYTHING in the shop! and got a great video with a surprise cameo from Philip at 0:17 (don’t tell his agent!), and some great pictures of the aftermath:

Here’s the cameo video of our now famous Jende Ceramic Sharpening Steel Whack!,Whack!,Whack!,Whack! video:

And some nice family friendly pictures of some proud new owners of some Spirit Blades:

20150609_163255

At Jende Industries L-R: Erika Miklósa, Chris, Tom, Philip Cutlip

 

20150609_163340

At Jende Industries L-R: Erika Miklósa, Tom, Jeremy Galyon, Philip Cutlip

But that’s not all – We also secretly placed a 6 foot walking billboard at the opera rehearsal… When my wife (who is in the orchestra) saw it, she called me up and yelled at me – after getting pictures, of course!  :D

11103974_819464708108962_1059439108_n

Nothing says “Bass” like a Jende T-shirt!

Jeremy Galyon loves his Jende Shirt!

Jeremy Galyon loves his Jende Shirt!

So the big night finally arrived – The opera was a huge success all around! The most interesting thing was when the Queen of the Night was singing her famous aria, she gave Pamina a knife to kill Sarastro… I couldn’t help wondering at that point if that was why Erika had purchased 2 knives earlier in the week….

We were lucky enough to score a slightly blurry selfie with one of the Three Ladies (who were amazing together!)

One of the Three Ladies with my ladies!

One of the Three Ladies with my ladies!

With the closing of the opera’s run, we were lucky to spend a little more time with our new found friends before they had to depart for home. Jeremy joined us for breakfast, and had to leave first, but we were able to have a light lunch with Erika and Philip at one of my favorite places in Kaohsiung – Chung-Shan University, which has an amazing view, and is right on the beach.

20150615_124356

The sun deck at Chung Shan University

View from the sun deck at Chung Shan University

Sadly, the time came for us to say our goodbyes, and we turned the page on yet another amazing encounter with great people! We did get some good souvenirs, though… We had the entire cast sign the program for our daughters, and Erika and Philip left a little something extra for them as well.

11349065_10206783858260602_2084886839_n

Jende Ceramic Sharpening Steels – Black and White Ceramic Rods

June 9, 2015

We are proud to announce our Jende Ceramic Sharpening Steels! They come in white ceramic (Mohs 9) and black ceramic (Mohs 8), and feature anti-break technologies in the handles and tips.

….and for those who have broken their ceramic steels with the slightest touch in the past – check this test out!

Knife steels are a staple found in almost every chef’s knife kit, but not much is known about the different kinds of sharpening steels out there. The Jende White Steel is triple fired, which hardens the ceramic material to Mohs 9. This added hardness is ideal for maintaining knives made with softer steels, and can be used for more aggressive steeling action.

The Jende Black Steel is double fired, which blackens the ceramic material and hardens it to Mohs 8. This hardness and density is ideal for maintaining knives with harder steels, and is an excellent finishing steel for quick touch-ups on the go.

The advantage to using ceramic steels over metal or diamond is the overall edge that is produced. Metal sharpening steels either bend an edge back into position without abrading (which is not necessarily bad in the short term), or rip the steel from the edge of the knife, substantially lowering the overall sharpness of the edge, not to mention making it very weak (which is just plain bad).

Diamond sharpening steels will abrade everything, but can be a little too aggressive if you’re not careful. This is good for aggressive maintenance, but for touching up an edge, it can quickly erode the initial edge geometry. Depending on the fineness of the diamond steel, it may also be diminishing the overall sharpness, and/or leaving a serrated edge.

The Jende Ceramic Sharpening Steels are designed with the idea that steels are used to maintain an edge in between sharpening. The Mohs 8 and 9 hardness of the steels work quickly and effectively, minimizing the loss of edge geometry while keeping the overall sharpness level intact. When using the Jende Sharpening Steels, it is recommended that your edge be sharpened between 1,000 and 3,000 grit .


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