Posts Tagged ‘EP stones’

Diamond Films by Jende Industries

November 10, 2014

Abrasion resistant steels and ceramic knives are now an established part of the knife and tool world, and this requires diamonds in order sharpen them effectively. That’s why we are proud to introduce Diamond Sharpening Films by Jende Industries! We have 10 grits available, ranging from 80 microns to 0.5 microns (180 grit to 30,000 grit), and come in Wicked Edge Precision Sharpener (WEPS) size, Edge Pro size (1″x6″), 2″x6″, 3″x8″ and 3″x11″. They are also available with PSA and non-PSA backing.

2x6 jende standard set web

2″x6″ Diamond Films by Jende Industries

With a grit range that rivals that of some of the best sharpening stone series out there, our diamond films can handle profiling and repairs while bringing your edges to amazing heights of sharpness. Our films are also great for slip stone applications – they can be wrapped around dowels for sharpening serrated edges or the inside curvatures of turning tools, or used to polish the blade of old razors.

We’ve put together a few diamond film sets to choose from in order to get you started:

The Polishing Set includes one piece each of 15, 9, 6, 3, 1, and 0.5 micron films (1K to 30K grit), and is a comprehensive set that is geared toward general edge maintenance and regular repair work. Straight Razor honers will benefit greatly from this set, and those looking for shave ready knife edges will definitely impress!

The Standard Set includes one piece each of 45, 30, 15, 9, 6, and 3 micron films (320 to 6K grit), and is an “all around” set that can handle profiling and reasonable repairs. The 3 micron finish produces a mirror finish, and is “good enough” for most knife and tool applications.

The Coarse Set includes one piece each of 80, 60, 45, 30, 15, and 9 micron films (180 to 1,500 grit). This coarse set is meant for some more serious work, be it cleaning up scratches from belts or diamond plates, or for removing chips or reprofiling. The 9 micron film leaves a great “working sharp” edge that will hold up to abuse, and still do some serious cutting.

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Setting a Straight Razor Bevel on a 1K Chosera EP Stone (Video)

March 14, 2014

I was asked to show the best way to set a bevel on a 1K stone, in particular on a Chosera 1″x6″ Edge Pro sized stone. FWIW, I do the majority of my razor honing on 1×6 stones because the 1″ width can easily accommodate most warping, frowning, and smiling blades better than a full sized 3″ width stone can. It’s a personal thing for me, as I have all the corresponding full sized stones as well, but for others, it is also a space and money thing.

Anyway, there are 3 basic strokes demonstrated in the video: Circles, Knife Strokes, and X-Strokes. There is a synopsis below the video. Enjoy!

Circles – are the most aggressive action, and are best for repairing chips or creating an initial bevel on a razor that is in need of serious restoration. I generally do sets of 20-25 circles per side with pressure. It may take many sets to do what needs to be done, but this is the stroke to get that work done. Once a bevel is established using circles, it will need to be refined with knife strokes on the same stone before moving to a finer stone.

Knife Strokes – are single sided back and forth strokes made without turning the blade over. It is “half an X stroke”. This stroke is best for light repair, or a quick refresh of a tired edge that has been maintained for a while. It uses less pressure than the circle stroke, and cleans up the messy edge the circles make. I generally do sets of 20-25 strokes per side. You shouldn’t need too many sets to accomplish your goal here if you’ve used circles, but if you start here, it may take several sets.

X-Strokes – are the usual method of alternating, single side honing strokes, and uses no pressure. This is the least invasive method, and the one that prepares the bevel/edge for the next grit level. I recommend at least 50-100 strokes to firmly establish the depth and consistency of the 1K stone. This will help prevent micro chipping at higher levels.

When to use each stroke?

If your razor is an Ebay special, or has serious restoration issues, then you will want to start with circles, clean up with knife strokes and then finish with the X-strokes – all on the 1K stone.

If you are maintaining a tired shaving edge with maintenance wear, I would begin with the X-Strokes, and if more aggression is needed, move to the Knife Stroke, and if it is really bad, resort to the Circles (and then work you way back up).

I hope this helps!

2011 BLADE Show in Atlanta, Part 2 – What Happens in Atlanta…..

July 19, 2011

This is a continuation of the adventures leading up to the BLADE show in Atlanta in June 2011. Part 1, The Sharpening Party, can be found here.

WEDNESDAY

This being our first BLADE show, Ken of Precise Sharpening and I decided to show up the evening before the setup day to see if we could make a few friends. The approach into Atlanta was awesome!

Approach into Atlanta

We arrived at the hotel hungry. Once checked in, we hit the hotel bar for some dinner. It was obvious there were already some people there for the BLADE show. Ken and I sat down at the bar and we noticed a push dagger sitting on the bar where a person had left it while hitting the bathroom. The owner returned, and Ken immediately struck up a conversation that started with “That’s a real nice push dagger you’ve got there on the bar...” It turned out to be none other than Jim “Treeman” Behring and his son, James, of Treeman knives.

After a little discussion and some admiring, I asked Jim if I could try out the steel on some of my Shaptons. 😀 I ran up to the room and hit it on the 1K, 2K and 4K Shapton Glass stones. I must say, this dagger was already plenty sharp off the belt grinder – I was really impressed. So for this blade,  I was in it more for the aesthetic contrast the shine off the Glass stones would produce against the dull matte finish of the steel. I made it back down before the next round of drinks, and Ken asked how come I finished so quickly, and I simply stated “I wanted to get some work done, so I used my Shaptons”. 😀

We ended the night feeling super pumped for the next day, which was a setup day.

THURSDAY

This being our first BLADE show, and my first show together with Ken, we had no idea what to expect, and actually spent the entire day trying to figure out the lay of the table. We had all kinds of stones – Japanese Naturals, Shapton, Chosera, full sized, Edge Pro size, Wicked Edge size, and an assortment of Ken’s CBN and Diamond compounds. We had 3 sharpening stations as well – A Shapton pond setup, a WEPS station and an Edge Pro station. I even brought some Maestro Wu knives!

Jende Industries Blade Show Table

WEPS Station w/ custom Marble Basin

FRIDAY

This was the big day! We had a breakfast meeting set up with Clay Alison and Bob Nash from Wicked Edge, and our good friend Mark R., aka: Ytriech, from the Knife Forums. Although I had countless hours of conversations with Clay and Mark, we  had never met face -to-face, and it is always so nice to put a real face to the names. We were quickly all like old friends.

Bob (L) and Clay (R) of Wicked Edge

At the opening of the BLADE show, things got moving pretty quickly. I had planned NOT to sharpen, but that didn’t work for more than about 5 minutes into the show 😀 I started off with a Spyderco knife (sorry, the model escapes me) working it up to 30K on the Shapton Glass stones. Ken was swamped with immediate interest in the high end CBN and Diamond compounds with his balsa wood strops, and people salivating over the beautiful Japanese Natural stones.

Ken Schwartz in action!

Then a Tanto knife that someone had used their Edge Pro on was presented. So I sat down at the Edge Pro station and gave it my best. I was doing OK, but then Mark showed up. Mark is a big-time Edge Pro user, and I’ve seen his work before (which is MUCH better than mine on the EP), so I quickly got him to sit down and give the knife a go. He had that knife sharpened to a 2K Shapton edge before I could finish my next sentence! I had done most of the work already… 😀 Next thing I know, he’s doing some recurved blade! Watching Mark made me realize very quickly that there is room for  a lot of improvement in my EP skills. I’m really glad I got to see him in action – it was truly inspirational!

Go Mark!

It was at that moment I had such an amazing feeling – Ken, Mark and I had never worked together in person before, but the table was running like clockwork, as if we’d been doing this for years.

Then I got the first knife for the WEPS. It was an S30V blade. I must admit that I don’t get exposed to many pocket knives, and I don’t know my steels as much as I know my stones. I must also thank (blame) Locutus from the Knife Forums for making me want to put a 16 degree edge on this thing! That was a chore! That steel is tough! And I know it’s not the toughest out there. I ended up using the 16 degrees as a relief angle and opted for a healthier 18 degree  bevel. That was much easier 🙂 I stared with the WEPS stock diamonds, and continued with a nice 800/2K Chosera combo, and the knife was kicking sharp!

The rest of the day went quickly, and before we knew it, they were closing the doors for the evening. Mark, Ken and I went to dinner and began what is possibly the worlds most geekiest sharpening conversations in the history of mankind. I wouldn’t have missed it for the world! 😀

For those of you who don’t know, Mark is Murray Carter’s first apprentice, and so we had an extensive discussion about almost every aspect of Murray Carter’s approach and philosophy to knife making and sharpening. Knives were coming out of nowhere from Mark – from his neck, his back pocket, his leg. People at other tables were actually starting to look at us. 🙂

What a perfect end to the day!

SATURDAY

Saturday was busy. I don’t know how many people passed through or how many knives got sharpened. One thing in particular stood out, though. and that was Larry Beverly’s “letter opener” with a 50 Caliber rifle round. Ironically, I had shot a Smith and Wesson 500 just a few days earlier, and had kept the casing as a souvenir.

50 Caliber letter opener

Larry Beverly

Naturally, I had asked Larry if I could touch it to the Shaptons….

Just like the push dagger from Wednesday evening, I was more concerned with bringing out the contrasts of the matte finish of the metal and the high mirror shine of the blades. Of course, it was probably the world’s most lethal letter opener, since I had taken it up to 6K. Unfortunately, I don’t think I was able to capture the shine with my camera at the show. Here is a picture below, but click here to see the full size version.

Letter Sharp!

That evening, Mark, Ken and I headed out to the Buckhead Pizza Co. in the Galleria Mall connected to the Cobb Centre, and had great pizza (and I’m from New Jersey, so I’m very picky) and even more knife talk! We met up with the Executive Chef, and told him to stop by for some free sharpening of his knives.

SUNDAY

The final day came all too quickly. John from the Buckhead Pizza Co. stopped by with his knife roll, and we spent a few minutes sharpening his knives up. After 2 wonderful meals there, it was the least we could do!

Buckhead Pizza Co.

Before we knew it, it was time to start breaking down and cleaning up. I’ll spare you the rundown 🙂

Afterwards, the adrenaline began to wear off, and we were able to calm down for a quiet, sober discussion about what had just happened over the past few days.

Relaxed and hungry, we hit the hotel bar for a burger, and, YUP – you guessed it – we had another intense knife conversation, complete with diagrams on napkins and scientific calculators (I’m not kidding! ) Mark is quite the closet propeller head!  In fact I commented on how Mark was the cool jock at the lunch table who was also really smart and popular. (He actually let out a genuine, ALLLLLLRRRIGHT! when Ken gave him a loud orange “May the Schwartz Be With You” T-shirt).

As the pumpkin hour approached, and the inevitable return from our weekend at the ball was closing in, we took a group picture.

3 Sharpen-a-teers

We had a totally awesome time, and we met so many more wonderful people who I didn’t get to mention, but who are not forgotten.

This was one BLADE show I won’t soon forget!

2011 BLADE Show in Atlanta, Part 1 – The Sharpening Party

June 23, 2011

So much happened at the 2011 BLADE show in Atalanta, that I don’t know where to begin without sounding like a schoolgirl at a sleepover party! 😀

I should probably start with what happened leading up to the Blade show. Ken Schwartz from Precise Sharpening flew in a couple of days earlier and we had a little sharpening get-together with John F (aka the Hone Ranger), Greg D, a well respected Japanese sword polisher, and his very good friend and sword enthusiast, Ron C.

John immediately earned a life-long invite to our cocktail parties by bringing his own microscope, complete with a portable computer screen! He said it tends to scare a lot of the local business away, though… It definitely had the opposite effect on us. John broke out his Edge Pro Pro model and we started sharpening stuff. I was playing with Ken’s Japanese Natural stones, and John wasted no time putting the nicest edge Ron’s  EDC has ever seen  on it with some Shaptons Pro stones for the Edge Pro (sorry, I forgot what kind of knife it was). I should probably mention that John does a great deal  of his sharpening business on the Edge Pro, and his whole approach is super-professional and friendly. (The 2 gallons of Arizona Iced Tea he brought didn’t hurt either!) 😀

John “Hone Ranger” using the Edge Pro Pro model

With the 1K Shapton Pro stone

With the 1K Shapton Pro stone

Greg brought 3 Japanese Katanas, each in a different stage in the polishing process. This was an extremely cool moment for me. I had always wanted to see a Katana up close. Pictures in books are too small to see the details, and the detailed pictures, often in black and white, don’t show enough of the larger picture. We’ll get to that later.

3 Katana

Greg’s 3 Katana

We also had a Skype video call from a very good friend of ours from the knife forums, Michiel in Belgium. My computer was the virtual Michiel, with the camera pointed so to get a nice long shot of the kitchen where we were working. It was like he was really there, interacting with all of us, and even having his own side conversations!

Greg D, left and John (Hone Ranger) in the back

Ken Schwartz, left, Ron in back, and Michiel’s avatar, right 

After a pizza break, Greg took center stage, setting up his sword polishing station on the back deck. Like I said earlier, this was a big thrill for me. Greg gave an amazing demonstration covering the majority of the polishing process. I must admit that most of the terminology being thrown around made my head spin, but the process had me totally captivated and on the edge of my chair the entire time. The biggest question posed in the end was “How do we incorporate sword polishing techniques into knife sharpening and visa-versa?” This is definitely something I will be thinking about from now on.

Greg showing the different techniques

Greg showing the different techniques

Foundation polishing with a 1K Shapton Glass Stone

Foundation polishing with a 1K Shapton Glass Stone

Polishing at the later stages

bringing out the grain of the steel

Finished polish (different sword)

Finished sword 2

Finished Sword

Finsished Sword

Finsished Sword with better lighting

Of course, we couldn’t help ourselves with the swords, and had to have a little play time with them…. 😀

Ken Killing himself

Ken Killing himself

whooooaaaaaa!

whooooaaaaaa!

Part 2:  What happens in Atlanta…

Shapton Pro Slip Stones – Available in 4 sizes and up to #30,000 Grit!

September 14, 2010

We have added a line of Shapton Pro slip stones in several standard sizes*!

Link

There are 4 standard sizes available in all Shapton Pro Grits – From #120 to #30,000 (.5 micron):
6″ Rod – 14mm x 14mm x 6″
Rectangle – 2″ x 3″ x 15mm
“EP” Size – 1″ x 6″ x ~5mm
Narrow – 0.6″ x 6″ x ~5mm

The beauty of these slip stones is that they go all the way up to 30K, leaving traditional slip stones in the dust.

There potential is only limited by your imagination, and can be used on knives to plane blades to straight razors to scissors to periodontal curettes.

Pictured below: The entire slip stone line up, including Chosera stones and DMT Plates for the Edge Pro; Shapton Pro 6″ Rods; Shapton Pro 2″x 3″ Rectangles.

Stay tuned as we will be adding Chosera slip stones soon!

*Custom sizes are also available. Please contact us for more information.

Customer Review: Chosera 2K, 5K, 10K Edge Pro Stones + DMT Extra Coarse for the EP

August 24, 2010

This is a comprehensive review of the Chosera 2k, 5K, and 10K Stones for the Edge Pro that a customer posted on The Knife Forums. It touches on many of the major arguments both for and against using the Edge Pro stock stones, and the Choseras for the Edge Pro.

The full thread with all of the replies can be seen here.

———————————

When reading this review please bear in mind that I am new to the EP. I have had many years experience sharpening woodworking tools, chisels, plane blades etc, and have sharpened all my own kitchen knives for a long time using wet & dry paper together with 3M Mylar film on glass backing.

There are those on this site with centuries more experience than I, and there are those who have sharpened several thousand for every one knife I have done.

That said I will report as logically, honestly and knowledgeably as I possibly can. Bear in mind the views expressed are mine and are worth, as a friend of mine is want to say, exactly what you paid for them.

The test was conducted as objectively as possible given my set up, resources and experience. The results are however highly subjective and personal.

I believe I possess a reasonably logical mindset and I lean toward the sceptical. I accept little until proven and am highly value driven – bang per buck is king and knives to me are tools.

Ireland is a country with very stringent gun and knife laws. Knives are found in the kitchen, are owed by fishermen, divers, sailors, climbers and other specialist endeavour / interest groups. Trades people all have knives in their tool kits, typically utility knifes of the disposable type such as those manufactured by Stanley – the market leader. The very very large majority of knives in Ireland are traditional Western style (French / German) kitchen knives.

Test Run 1

To compare the Chosera 2,000, 5,000 and 10,000 with 2,000, 3,000 and 7,000 EP tapes

The Knives:

Two identical Wusthoff Classic Chefs Knives. Bought the same day from same wholesaler – these knives had been sharpened by me previously so were in reasonable shape. Knives are for home use only and are well looked after receiving only a regular touch up on a ceramic hone between sharpening. The knives are sharpened at 17° on each side, 34° included. Normally knives would be sharpened as far as 600 grit stone.
One knife was marked A the other B.

The Process:

I sharpened each of the knives alternately on the same stone one knife after another in the same progression starting with 320, and progressing through 600 and 1,000 stones.

A marker was used at each stone change on each knife to ensure that the exact same angle was being hit with each stone progression.
Standard EP techniques were used to de-burr together with hard felt to remove all traces of a burr before progressing to the next stone.

Paper slicing testing together with the three finger test at this stage showed zero differences between the two knives.

Knife A was then further refined on new standard EP tapes in the progression 2,000, 3,000 and 7,000. Both the 2K and the 3K were mounted on standard EP aluminium blanks the 7,000 was mounted on a glass blank.

Knife B was further refined on the new Chosera 2,000, 5,000 and 10,000 stones.

Visual Inspection

Knife A – the tape treated knives showed atypical levels of finish and polish, with superior levels of polish and high performance paper slicing results. Standard A4 80GSM photocopier paper, newsprint and 3M post it notes could all be slice and push cut.

Knife B – the Chosera finished knife showed a slightly higher level of polish with less scratch marks being evident. Standard A4 80GSM photocopier paper, newsprint and 3M post it notes could all be slice cut and push cut but with an ease not evident with the tape finished knives.
The three finger test on the tape finished knife was similar to tests I had conducted before on similar knives taken to this level.

The three finger test on the Chosera finished knife provided feedback not experienced before. This knife felt considerably sharper and had to be treated with considerable respect during the three finger test.

Magnification test

I currently use a cheapie 30X Loupe to check my edges. The Chosera knife and Tape knife showed a relatively high level of uniformity along both horizontal and vertical axes of the bevel with the Chosera knife displaying a slightly better uniformity of scratch pattern. Scratch pattern depth on the Chosera knife was also more regular with the Tape knife displaying the odd slightly deeper scratch.

The edge difference between the two knifes was however quite evident. A toothiness seen in the tape knife was not present in the Chosera knife and the edge on the Chosera knife was noticeably more regular or straight.

Overall Impressions

If asked to select the better finished knife I would opt for the Chosera knife – it is hands down the winner in terms of polish, finish and sharpness.

If 100 average people at a shopping mall were asked to compare the two knives I doubt if more than 1 or 2% would notice the difference.

A pack of 2,000 polish tapes costs $7.00 for 15 tapes – a 2,000 grit Chosera stone costs $36.00.

A pack of 3,000 polish tapes costs $7.00 for 15 tapes – a 5,000 grit Chosera stone costs $36.00.

A pack of 7,000 polish tapes costs $7.00 for 15 tapes – a 10,000 grit Chosera stone costs $60.00.

The Chosera stones were on special sale at the time I bought them so the price I paid was less than that detailed above. See the Jende Ind. web site for current pricing.

I would normally get between 4 and 5 knives out of each polish tape. Based on the costs above I would need to get 385 knives out of the 2 and 5K Choseras for them to work out at the same cost per knife and I would need to get 640 out of the 10K stone for the two options to work out at the same cost. This of course assumes that equal results are obtained from both the tapes and the Chosera stones. My initial impressions are that the stones provide a superior finish but we are talking at an extreme level compared to what most (99%) of users are used to.

The Chosera stones are considerably thicker than the standard EP stones – I would be reasonably confident that achieving the above number of sharpening per stone would be achievable.
There is the debate about having to change tapes every 4 to 5 knives versus the more continuous use of the stones. Stones however do need flattening – to what degree with these stones I have yet to discover but more of this anon.
If asked whether tapes or high level stones are necessary to get very sharp knives – I would say no.

If asked if one wanted to experience a well finish polished bevel at very low cost – I would advise that you try the tapes.

If asked that if money was no object which system would I prefer – I would undoubtedly opt for the Chosera stone approach.

In my view the Polish Tapes are very accurately named – they do yield a very nice polish when used after a 600 or 1,000 grit stone and where the scratch marks of the previous stone have been eradicated through each stage. They do not, in my humble estimation, have a huge effect on the edge in terms of contributing additional sharpness i.e. edge angle reduction, they simply don’t appear to have the cutting power after the first couple of passes to achieve this objective.

By contrast the stones are not a surface only abrasive medium – new layers of abrasive material is constantly being exposed thus giving the stones the edge in the cutting performance stakes. Allied to this is a level of polish equal, if not superior, to that of the tapes.

Test Run 2

Sharpening Japanese Knives on Chosera Stones

I have used Japanese chisels for many years. I bought one to begin with and then bought many more afterwards. I personally have never used or sharpened a western chisel that compares with a Japanese.

I am however very, very new to Japanese knives. I bought two Japanese knives six months ago – a Hiromoto Aogami Super TJ-50AS 120mm Petty from Koki and a 210mm Tojiro DP Gyuto from Mark.

Neither had yet been sharpened and had received nothing but an odd touch up on a ceramic hone.
Today I sharpened the Hiromoto Aogami at 12° each side and the Tojiro at 15° each side. When purchasing the Choseras from Tom & Ken I also took the opportunity to get a mounted DMT XC. The DMT took all the work out of grinding the new bevels.

I then took the two knives through all the EP grits up to 1,000 before progressing to the Chosera 2K, 5K and finally 10K.

When I had finished I used both knives to prepare dinner this evening – mainly prep work on onions, carrots, potatoes, courgettes and the like.

Although both knives were sharp out of the box I believe I can now say that I have never held a sharper knife in my hand. I realise that both these knives are low end and budget compared to knives used by the majority of knife nuts reading this but for my purposes they are quite simply superb and more than adequate for the tasks my culinary skills can ask of them.

Test Run 3

To fill out my knife collection I wanted to add a slicer. I did not however wish to part with the $$ necessary to acquire a Japanese version mainly because it would get only occasional use.

To bridge the gap, and due in no small part to the acquisition of the EP, I snagged myself a 4 Star Elephant marked Sabatier slicer. Using my 120 – 1,000 EP stones and tapes I set about putting a very low angle bevel of 10° followed by a 15° micro bevel on one side having previously completely flattened the back side.

Today I re-worked the knife using my EP stones and Chosera stones. The edge I had put on the knife simply didn’t stand up to any sort of prolonged use. So I re worked the bevel again at 10° but put a micro bevel of 15° on both sides.
I’m hoping that the knife will perform almost as well in terms of slicing abilities but will hold its edge considerably better given that the included angle is now twice what it was previously.

I have not, as of yet had the opportunity to put the knife through it’s paces however in terms of finish it is as good if not slightly better than previously.

Choseras – Ramblings & afterthoughts

As previously mentioned the Choseras are thicker than the standard EP offerings. However I could not get the ramp high enough to meet the edge of the Chosera stones which in effect meant that I could not risk using the entire length of the stone for fear of catching on the edge. This leads me to believe that the middle of the stone will dish sooner than if one could use the full length.
Tom, Ken or anyone else reading this – if you have a solution or workaround I’d be happy to hear it.

The 5K stone feels very different to me. It is a thirsty stone and is almost reminiscent of an old Arkansas very fine oil stone I used to use many years ago.

Ken, when he was mounting the 10K stone left it wide and bevelled the edges. This proved useful in terms of productivity and will, I’m sure, extend the life of the stone. With its extra width it made fast work of the polishing process.

The feedback from the stones is infinitely better than that of the tapes. From day 1 I have found it difficult to feel or read what the tapes were doing.

The Choseras on the relatively soft Wusthoff knives created quite a bit of mud. This I cleaned off at very regular intervals. When using the same stones on the Japanese knives they created a lot less.

Having used the Choseras for the test runs outlined above would I buy them again – the plain and simple truth is I really don’t know yet, time will tell. If they hold up as well as I expect them to and I get reasonably equivalent life out of the stones compared to the tapes then I would say yes. But if I were to discover that I had to buy a new set of stones after say a couple of hundred knives – maybe not.

Although not strictly relevant to the report here – I really really hate the standard EP 220 stone. The 120 is no great shakes but the 220 is just awful. I normally try to avoid using the 220 but for the Japanese knives I reckoned that the jump from 120 to 320 would be asking a bit much of the 320. On reflection I should have just persevered with the 320 rather than suffer that horrible 220.

That’s about it for my initial feedback. Hope somebody gets some use out of the ramblings.

15mm Wide 30K Shapton Pro for the Edge Pro

July 26, 2010

I recently received an inquiry from a customer who was thinking of purchasing the 15mm wide 30K Shapton Pro Edge Pro stone, and I thought that sharing my answer would be helpful to others.

In order to experience the full potential of the Shapton stones, the 30K is a must, in my opinion. The 15mm wide 30K Shapton Pro EP Stone is certainly a luxury, though – I won’t try to say it isn’t. In my experience it leaves an incredibly consistent and very smooth, yet gripping edge that is not duplicated by any other method I have tried.

Can other things arguably do as good as or better than the 30K pro? Yes. However, different products yield different results. 0.5 micron Chromium oxide makes the bevel very shiny, but the edge becomes less gripping, while 0.5 micron diamonds make the edge more aggressive and leaves more scratches on the bevel. Furthermore, there will be varying results based on the quality of the Chromium Oxide and carat concentration and shape of the crystals in diamond sprays and compounds. These variations are by no means negative if a particular product or combination of products produces the results you desire. I wholeheartedly recommend you experiment with the different products to find which suits you best.

I do recommend the 30K if you are serious about sharpening and your budget permits it. The 30K completes the Shapton lineup, which is the original intention behind using Shaptons. They are designed to be used all the way up to 30K instead of switching to another medium like pasted strops or felt pads at the end. As mentioned above, switching to different products at the very end produces different results. I happen to really like the results of the 30K specifically for sushi knives and straight razors.

East Meets West Get Together 6/2010

June 25, 2010

Ken Schwartz of Precision Sharpening flew in to New Jersey from California on Friday night. Although I have had countless hours of Skype calls, we had never met face to face until now.

We got home and jumped right in – Ken started unloading his equipment – some 15x loops, an inspection microscope with several eye pieces, and a thing that measures angles (inclinometer?). I had my 100x microscope. We didn’t do any sharpening since it was late, so we just talked theories and philosophies before heading off to bed.

Saturday started at around 7am for me. I started honing a razor on my Shapton Pros since we had discussed some of the issues I was having with my razor honing. My main concern was that I was not getting the edge of the edge with the glass stones. The harder matrix of the Pros seemed to enable me to get the edge of the edge better than the glass stones, which wear faster, causing a slight rounding at the edge. Things seemed to work better for me on the Pros in this regard.

When Ken woke up, we started seeing some of the spoils from his recent trip to Japan. He brought an Iminishi 5K and 10K, as well as a Japanese natural stone. He also brought some of his Stone Paper, which is paper smeared with stone swarf harvested during the cutting of the Shapton and Chosera Edge Pro Stones. Most importantly, he brought the most recent addition to the Shapton Edge Pro stone lineup – the 30K Pro!

We fooled around with the full size 30K Shapton Pro and created a few pieces of Stone Paper along with the new Shapton 10K Glass stone. Ken was very interested in trying the Shapton #120 and #320 stones, which have just come out.  The best worst knife we had in the house was a Cutco chef knife. Ken used the #120 and #320 Glass on that before switching over to the 1500 Pro to finish it off. (Below is a picture of use using the stone paper with a Maestro Wu cleaver.)

It was interesting to watch Ken sharpen – I use my elbows, but he uses his torso. As interesting as it was for me to watch, his rocking was making me seasick! For those of you that don’t know Ken, he is very precision oriented. He was very careful  and systematic in each stroke he made. I could tell he had visualized the path of the knife and how and where he was going to angle the knife on the stone to account for the length and curvatures – just like a golfer reads the green before a putt. Because of this, he achieved a very consistent angle from heel to tip. It was clear that Ken did waste one stroke, and progress was made even faster by the low grit Glass stones. It is obvious that his method of movement while sharpening works very well for him.

As the day wore on, we continued with my razors, pushing each stone to the limit. I tried the Japanese Natural stone Ken brought, and it was amazingly smooth and buttery for a rock. Overall, we determined that it was in the 12K-15K range. With the use of a Nagura, I’m sure that 20K+ could be squeezed out of it.

We also tried the Iminishi 5K and 10K stones. The softness of the 5K reminded me very much of the 4K Norton. It created a very nice, true 5K finish, even if slower than my Shaptons (of course!). The 10K was a surprising stone. I was sure it would be like a higher grit 5K, but it was much better. When used without paste or slurry it is a rough 10K – more of an 8K to me, but with slurry or paste, it eventually left a whopping 15-16K finish. I was quite impressed.

Then the fun really started….Keith De’Grau of Hand American stopped in with his wife. It was like Christmas and and birthday rolled into one! We had another guest over at the same time – Mike Blumenthol of Libra Technologies, who is an outstanding Chemist (amongst other things), and Keith, Ken, Mike and myself had one of the most eye-glazing conversations about the sharpening industry you could ever imagine! It was downright amazing and incredibly informative. I’ll spare you all the details….:)

While we were sharpening all day in the kitchen, my 89 year old grandfather was making the his mother’s gravy (tomato sauce) for dinner. I haven’t had this kind of old school Italian meal since my great-grandmother died about 20 years ago. Keith and his wife stayed for dinner, and we discussed a wide range of topics, drank some wine, ate some pasta, and just all around enjoyed ourselves as good friends do.

After dinner, Keith took out his briefcase and the fun continued. He showed us the Idahone glass rod, some of his new .25 micron diamond spray, and a new bench hone he had with interchangeable hones coated with different types of abrasives. I was checking the results of each one under 100x magnification, and I’ve got to tell you, there is nothing better than Hand American products (outside of Shapton stones!) We had a blast, showing off some Maestro Wu knives, using the stone paper, and Keith gets a special shout out for hitting 0.0 on the inclinomoter! We were like girls at a sleepover!

On Sunday, my Uncle, cousin  and brother came by for a quick visit, and we sharpened a couple of knives and a we had a pair of 13″ fabric shears that date back to pre-1914. They were impressed with the sharpness of things (see pictures). The rest of the time was spent taking pictures of the Edge Pro stones. We had to get out for an early morning flight, so Ken and I ended up staying up all night.

It was a great weekend, where friendships were formed and a whole lot of swarf was created. I can’t wait to do it again! 🙂

Here are more pics as a slide show!

15% Off Chosera Edge Pro Stones!

May 24, 2010

Here’s a shameless plug for a little sale on Chosera Edge Pro Stones – a perfect gift for Father’s Day…. (wink wink, nudge nudge, know what I mean?)

For the next couple of weeks, the Chosera Edge Pro Stones will be 15% off. These stones are 1″x 6″ x ~5mm – roughly 2x as thick as the stock EP stones (which are 3.2mm).

We have all of the grits in stock. You can click here for the Edge Pro Stone Menu Page , or on each grit below to go directly to the product page.

#400
#600
#800
1K
2K
3K
5K
10K

These stones are extremely popular, and make the already very capable Edge Pro that much more versatile. Get them before it’s too late! 🙂

30K Shapton Pro Stone for the Edge Pro

May 19, 2010

Since our introduction of the cut Shapton and Chosera stones for the Edge Pro, Ken and I have been trying to find the best way to bring the 30K Shapton Pro stone to Edge Pro users – without the need for a second mortgage.

With the acceptance of the 2″ wide mounted DMT plates for initial bevel setting and the 3/4″ wide stones for recurved blades, the Edge Pro community has shown that the EP is not limited exclusively to the 1″ wide standard.

With this in mind, Ken and I have found a solution for the 30K Shapton Pro!

As the 30K grit stone is solely for adding the finishing touches to an already refined edge, you’ll only need a few light passes with the 30K to take the edge up another level. In order to make the 30K stone more affordable, we are going to offer it in a narrower width – roughly 0.6 inches, but still at a beefy ~6mm thick and 6″ long. It comes mounted on a 3/4″ wide aluminum plate.

The 30K Shapton Pro for the Edge Pro is US $120.00 + shipping, and is currently only available through us on the Knife Forums. This will not be a regular product on the website, but we will try to make it as available as possible when enough people get on the list.  So join the Knife Forums, and reserve your 30K Shapton Pro EP Stone now!  🙂