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Profile for Jet B
OFFLINE
Rank:
Junior Boarder
Register Date:
18 Feb 2012
Last Visit Date:
30 Dec 2012
Time Zone:
GMT -7:00
Local Time:
15:06
Posts:
35
Profile Views:
198
Karma
: 6
Location:
Western Canada
Gender:
Male
Birthdate:
12 Jul 1974
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Posts
Posts
Re: Leading or Trailing Stroke ...
FredHermann wrote:
Ok, I have been reading this ongoing, and it's fascinating.
But please forgive my ignorance...I thought I knew what you were talking about, until I didn't.
Can someone please define 'leading vs trailing'? I thought you were talking about going tip to heel or vice versa. Call me a noob, but this one has confused me.
Think of edge leading as if you were trying to cut the medium. Edge facing the direction of movement. Edge trailing is the opposite where you drag the blade across with the 'edge trailing'.
Hope that helps you. It's actually a controversial topic in the sharpening community... haha;)
Leading or Trailing ...
Category:
Advanced Techniques and Sharpening Strategies
Posted 4 months, 3 weeks ago
by
Jet B
Re: cold steel kukri machete
I have sharpened my Kabar Kukri machete on the WEPS. It works fine but you might end up with a fat bevel at the tip unless you can clamp fairly far up the blade. It's fine for a user edge, but you might want to do it by hand if you want even bevels.
cold steel kukri mac ...
Category:
Tips for Specific Knife Grinds and Styles
Posted 5 months ago
by
Jet B
Re: Leading or Trailing Stroke ...
wickededge wrote:
Jet B wrote:
It's sometimes hard to sift out the truth when so many seemingly experienced knife people can have directly opposing viewpoints on how to achieve the best edge...
Ain't that the truth! Most of the knowledge base in the field is based on anecdote, which doesn't mean it's necessarily incorrect, but a lot of it has not been tested rigorously with controlled variables.
I like how you experiment and post pictures like this Clay. It really helps sift things out.
Leading or Trailing ...
Category:
Advanced Techniques and Sharpening Strategies
Posted 5 months, 1 week ago
by
Jet B
Re: Leading or Trailing Stroke ...
This is an interesting topic.
I've recently been reading some stuff on the Spyderco forum where Cliff Stamp was really speaking against any kind of trailing edge strokes and also stropping in general. He was saying something about stropping and edge trailing strokes just push the metal back and forth and fatigue the edge causing a loss in edge retention. This confused me because from my own limited experience, I seem to have better edge retention since getting my WEPS and adding stropping to the finishing step in my sharpening routine.
It's sometimes hard to sift out the truth when so many seemingly experienced knife people can have directly opposing viewpoints on how to achieve the best edge...
Leading or Trailing ...
Category:
Advanced Techniques and Sharpening Strategies
Posted 5 months, 1 week ago
by
Jet B
Re: Clamping problem
It can take a while to get good at it, but the foam tape trick Clay shows in that link will work.
Most of my knives are Spyderco with full flat grinds and distal tapers. I have managed to clamp and sharpen them all. If you are having consistent problems still, make sure you don't have one of the older defective vice jaws. If your vice arm is bent at all, the clamping will not work properly. I had this problem and it was extremely frustrating until I realized the thing was bent.
Clamping problem
Category:
Techniques and Sharpening Strategies
Posted 6 months ago
by
Jet B
Re: I tried something differen ...
WayneReimer wrote:
Most of the knives in my collection fall into the more "tactical" styling, and I pocket carry at least one per day. I use all of my knives regularly, and none too gently, so my needs for an edge are dictated by overall usability, sharpness, and durability. Appearance ( i.e. polish) is a secondary concern.
I have a number of Striders of various sizes depending on the job I may need to do. Lately, I've been carrying a mini SJ75 a lot. This is a bit of a polarizing design; some love it, some hate it (looks wise), but the ergonomics are superb, and it's a tremendous little knife. The problem is that it's a knife that, to me anyway, screams for a polished edge, so of course you lose a bit of cutting ability with a good polish. I should mention that my standard for a good polish is different than many of you; for me a good polish stops at 1000 grit, with stropping to 1 micron followed by bare kangaroo leather.
Yesterday, I re-profiled this knife from 22 degrees per side to 20, and took it to my "polished" standard. It was extremely sharp, however I'd lost the tooth that I like to have for things like zip-ties, etc.
In an attempt to solve this, I re-mounted the knife ( I use a Field and Sport, BTW), set the arms at 22 degrees ( remember the knife is now at 20 degrees) and did one pass, tip to heel with a 1000 grit stone.
There is no visible difference, naked eye. With a ten power loupe I can see it pass, but barely. Cutting performance however is improved. I have some tooth back and cutting zip-ties ( which I seem to be doing a lot of lately) is noticeably easier.
My question is this; what other ideas do you have for having a polished edge that still has some tooth? I've tried stopping at a lover grit stone and stropping from there, but the toothiness is muted by the stropping. It seems to me that re-introducing some fresh tooth after the strop like this gives a bit more "bite" to the cut, but I'm sure curious about others experiences
Hey Wayne, I read in a thread on Bladeforums a while back that J. Ankerson and some other guys actually get some of the best cutting performance and edge retention as well by sharpening just like you describe.
Putting that toothy micro-bevel on a polished back bevel was supposedly a very good way to sharpen your edc for maximum performance and retention during both slicing and push cutting.
I think you stumbled on to a good thing.
I tried something di ...
Category:
Advanced Techniques and Sharpening Strategies
Posted 8 months, 2 weeks ago
by
Jet B
Re: A question about VG-10 Ste ...
FredHermann wrote:
Hi,
I didn't see anything like this anywhere...so here goes. (I just guessed ata category)
I've got 3 different companies knives, all claiming to be VG-10 at the edge. In profile, they are all kitchen knives, Shun, Calphalon (sp?) and one from AG Russell.
Interestingly enough, I sharpen them all the same, and they retain the edge COMPLETELY differently.
So my question (I think) is there wide variance in VG-10 steel, like you'd find in say 1095?
Call me curious.
The heat treat can make a huge difference.
So yes, VG-10 from different companies can vary a lot.
A question about VG- ...
Category:
Basic Techniques and Sharpening Strategies
Posted 8 months, 3 weeks ago
by
Jet B
Re: Slightly uneven bevels
Well... I am taking her to Mexico for 10 days on a holiday in October.
You just made me realize I should buy some knives and stuff while my brownie points are still active.
Slightly uneven beve ...
Category:
Basic Techniques and Sharpening Strategies
Posted 8 months, 3 weeks ago
by
Jet B
Re: Slightly uneven bevels
It has all worked out in the end. I convexed my Tuff by hand with some sandpaper and a cheap mousepad. ( I really like convex edges, they hold better for hard use).
Before I use my WEPS again to touch up my V edges, I will make sure I have an angle cube at least. Most likely I will pick up the new arms too once they have been tried and tested some more.
Slightly uneven beve ...
Category:
Basic Techniques and Sharpening Strategies
Posted 8 months, 3 weeks ago
by
Jet B
Re: WEPS Pro Pack II
I'm a bit disappointed that I have to fork over more money to achieve exact angles on each side. I discovered this after re-profiling a fairly thick blade. Because the one side of the clamp is fixed and the other one floats, your angles will never be symmetrical side to side.
The solution is to use an angle cube to set the angles and not use the preset angle markings on the bars. Rather than buy the new arms that are adjustable, I'm going to try turning the brackets around and not using the pre-drilled divots. As long as those angle cubes are accurate to .1 of a degree and the arms don't move it should work.
Maybe I will buy the new arms eventually once it looks like all the bugs have been worked out of the changes.
If you are buying the system for the first time, I would definitely recommend getting the angle cube and adjustable arms though.
WEPS Pro Pack II
Category:
Product Announcements
Posted 8 months, 3 weeks ago
by
Jet B
Re: Slightly uneven bevels
Thanks for the input CB. I think the factory grind was pretty symmetrical when I got it. Its most likely the mounting factors that caused this. I could see something funny right away when the sharpy wasn't being removed the same on both sides even though the bevels looked equal before starting. I guess I should have stopped sooner and researched it. The knife is still sharp though and it's going to be a user so I'll just grind more metal off eventually and even them out. I might try hand convexing it, we will see. I ended up with a pretty fat bevel at the top since I sharpened it too far back from the sweet spot. I did it at B and A.5 is closer to the best even bevel spot.
Live and learn. I will likely have to get the improved arms, I'm just scared to spend the money on them until Clay has perfected the changes more. It seems like there have been constant improvements needed on them.
The last angle cube I bought was grossly innacurate compared to my iPhone so I returned it. I need to find a better one. Problem is, every time I spend money on my knife hobby my wife seems to think she gets to buy a new purse! Haha.
Slightly uneven beve ...
Category:
Basic Techniques and Sharpening Strategies
Posted 9 months ago
by
Jet B
Re: Slightly uneven bevels
AlexDoherty wrote:
Because only the right side of the clamp is moving the right side angle will be off a little because of the thickness of the knife. The left should be accurate say 20 degrees but you will have to run the right at 21 or 22 to keep the bevels even but how much you have to move it will depend on how thick your knife is. The thicker it is the more you will have to move it. The angle cube helps with this. I hope this helps.
BTW it sounds like the app may be accurate. I've also got to ask how do you like the 3V in the Tuff?
This might possibly be the reason. The Tuff is the thickest knife I have sharpened other than my machete. Maybe that's why the bevel difference is more noticeable. The blade is very thick for its length and would be putting that right side clamp off more and the blade will be off centered a few MM.
The Tuff actually seemed to have a very even and centered grind when I got it, it's only after I re ground it that they look off. Maybe this would have been a better time to learn to sharpen by hand with a loaded strop... Hard lesson to learn on a $270 knife though.
So far I'm impressed with the 3V. It seems to have similar edge retention to S30V but it's very tough and chip resistant. It also seems to take a very sticky sharp edge from stropping. I only tested it out on a recent camping trip so I need more time to really assess it. 3V is hard to really use to its best ability in a folder since its going to excel at chopping and even though the Tuff is built like a tank I'm hesitant to beat on it like a fixed blade. I have done some light chopping and batoning though and the steel was unscathed where other high hardness alloys would likely have chipped.
Slightly uneven beve ...
Category:
Basic Techniques and Sharpening Strategies
Posted 9 months ago
by
Jet B
Slightly uneven bevels
I seem to be getting slightly uneven bevels when I reprofile a knife. I use the sharpy method and remove metal until I'm at the edge but it always seems to remove more from the right side. It is a very slight but noticeable amount.
Just wondering if this is likely due to less than perfectly true mounting or are my angle adjustments off a bit? I do notice that when I set it to say 20 degrees I can see the line on one side but the line is covered on the other but both are firmly in the notch. Am I expecting too much accuracy from the equipment?
I do not have an angle cube, but I always try to measure the angle with my iphone and the ihandy app. It always tells me the angles are around a degree off but I have just assumed the iphone isn't accurate... Maybe it is off though? Could my drilled notch holes be a degree off on one side?
Do I need to splurge and get the new arms and angle cube to be able to set perfectly accurate angles?
I just don't want to remove any more metal from my new Spyderco Tuff trying to make these bevels perfect if I'm fighting an uphill battle and just wasting this valuable metal.
Thanks for any insight.
Slightly uneven beve ...
Category:
Basic Techniques and Sharpening Strategies
Posted 9 months ago
by
Jet B
Re: new arms
Thanks Clay.
Sounds like a great improvement.
new arms
Category:
Product Announcements
Posted 9 months, 1 week ago
by
Jet B
Re: new arms
Are these going to be available on the website? How much will they cost?
What are the benefits of the new design?
new arms
Category:
Product Announcements
Posted 9 months, 1 week ago
by
Jet B
Re: Spyderco Schempp Tuff
It's an interesting knife design for sure. This thing is a beast and it was definitely made for slashing and chopping.
The CPM 3V steel is the star of the show. It takes an almost sticky sharp edge and is extremely tough and impact resistant. I'm sure there will be a trade off in edge retention, but it's very resistant to chipping and rolling.
After what I have done with this folder so far... I think I would like a larger fixed blade in 3V.
I chose to put a 40 degree inclusive primary bevel and a 46 degree microbevel on it just because I plan on being rough with this knife.
I usually go 30 and 40 degrees or somewhere in between with my slicing knives.
Spyderco Schempp Tuf ...
Category:
Tips for Specific Knife Grinds and Styles
Posted 9 months, 1 week ago
by
Jet B
Re: Steels that take an edge?
So far, M390 is my favorite. It takes a very good edge and holds it, and holds it, and holds it...
I can get my S30V and VG10 very sharp, but it will lose that hair popping edge quickly when cutting cardboard. However, M390 just stays sharp all day long, and then the next day etc. I would love to try some S90V or 110V.
I also just picked up a Tuff in CPM 3V. It seems very easy to put a sticky sharp edge on that stuff. I know it's edge retention isn't going to be anywhere near what M390 will be, and I haven't had it long enough to get a really good feel for what it can do. I did some light chopping with it though that I would never do with my other knives due to the fear of chipping and the 3V had zero damage and was still paper slicing sharp, just not sticky sharp anymore. Very impressive stuff for hacking and chopping.
Steels that take an ...
Category:
Thoughts/Theories/Science Related to Sharpening
Posted 9 months, 1 week ago
by
Jet B
Spyderco Schempp Tuff
I was able to get a positive clamp on my new Tuff using some foam tape in a fairly wide strip. Bottom holes and B depth.
The tape seems to fill in the fuller and give a tight clamp. Similar to but even more firm than using this technique on full flat ground Spydies.
The blade is very stout at the tip, so I did end up with a pretty wide bevel up there. I guess you could try moving the blade down a bit towards the tip. The factory grind had an even bevel all the way so it must have been very obtuse at the tip because there really isn't any distal taper. I had to remove a fair amount to get it sharpened at 20 degrees all the way.
I might have been better off at A.5, but the point drops so the clamping was going to get more challenging the closer to the tip I got. A.75 would have been nice, but I would have to mark my depth gauge for that.
Spyderco Schempp Tuf ...
Category:
Tips for Specific Knife Grinds and Styles
Posted 9 months, 1 week ago
by
Jet B
Re: How much angle variance is ...
I don't believe that I have ever seen the exact angle on each side but I always assumed it was error in the instrument I was using.
I originally used my iphone with an app that uses the built in accelerometer to measure the angle but I assumed it wasn't accurate so I bought a $40 angle cube at the hardware store and it was blatantly even more inaccurate so I returned it and just use the iphone again.
1 degree isn't so bad as long as I'm always clamping and sharpening with that same profile I figured... Is there a certain brand of angle cube that is deadly accurate and reliable to use?
How much angle varia ...
Category:
Techniques and Sharpening Strategies
Posted 1 year, 1 month ago
by
Jet B
Re: My first try with Chosera ...
Nice job! And great little working knife there. I like the Skyline.
My first try with Ch ...
Category:
Knife Photos
Posted 1 year, 1 month ago
by
Jet B
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