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TOPIC: Sharpening a Convex Edge Question

Sharpening a Convex Edge Question 6 months 2 weeks ago #16494

  • mctrinket
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Hi all!

So I watched Clay's video where he sharpened the Sebenza to a convex edge a few times now and I just wanted to ask a clarification question:

So it seems like he puts the lowest angle first, say a 17, then puts on the highest, say a 20, then counts down by degress back to the lowest. So: 17, 20, 19, 18, 17. Then strops at the lowest angle (the 17). Is that correct?

I still trying to learn. Really enjoying my Wicked Edge. :)
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Sharpening a Convex Edge Question 6 months 2 weeks ago #16496

  • EamonMcGowan
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mctrinket wrote:
Hi all!

So I watched Clay's video where he sharpened the Sebenza to a convex edge a few times now and I just wanted to ask a clarification question:

So it seems like he puts the lowest angle first, say a 17, then puts on the highest, say a 20, then counts down by degress back to the lowest. So: 17, 20, 19, 18, 17. Then strops at the lowest angle (the 17). Is that correct?

I still trying to learn. Really enjoying my Wicked Edge. :)

Hi and welcome to the forum. Remember we where all new in the beginning so ask as many questions as you have!
You have the basic concept. This info helped me go step be step my first few times. It really is very easy once done and leaves a beautiful edge!!!

www.wickededgeusa.com/files/Creating%20a%20Convex%20Edge.pdf

Remember have fun!!!
The definition of insanity is to do the same thing over and over again and expect a different result?
An old Irish toast, May the wind always be at your back, may you always have work and may you be in heaven a half hour before the devil knows your dead. Cheers!
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Sharpening a Convex Edge Question 6 months 2 weeks ago #16497

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Well said Eamon! Add my welcome to this forum. All kinds of good help here. You are among friends!

Cheers
Leo
Never go anywhere without your knife!
Gibbs rule number 9

Leo James Mitchell
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Sharpening a Convex Edge Question 6 months 2 weeks ago #16498

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Thank you, Eamon!

I followed the steps in the link you provided and it seemed ot work well, though the facets were still noticable after I stropped. Perhaps I just need more practice.

What confuses me still is the order of the steps in Clay's video seems to be different from the order of the steps in the tutorial in the link you provided--unless I am mistaken.

Clay seems to go 17, 20, 19, 18, 17; the link instructed to work from lowest angle to highest (so it would be 17, 18, 19, 20, 17). Maybe it doesn't make a difference?

I am going to keep reading and tring to learn more about edges. This is a terrific forum for that!
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Sharpening a Convex Edge Question 6 months 2 weeks ago #16499

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Here is a simplified version from a post I made a couple of weeks ago. This works for me and is not complicated.

"Confusing with the two Leo's eh! Sounds like the two tenors!
Whenever I have a knife to be used for survival or bushcraft, I try to present the strongest possible yet practical edge geometry i.e. a convex edge. Notice I said edge not grind. I took my ESEE 6 and using the diamonds paddles laid on a 17 dps edge; from there using the 400/600 and the 800/1000 paddles moved up with delicate strokes to 19 dps and again to 21 dps setting. Finally I used the leather strops through the pastes gently melding any shoulders I created into one smooth convex edge.
The result is a super sharp wedging edge that is strong enough to baton hard wood and delicate enough to bring up fine shavings on a fuzz stick. The convex edge is imitative of an axe edge giving both strength and keenness.
Hmmm! Clear as mud eh! The old noodle isn't up to concise and clear anymore, but you get the idea. You get the advantage of convexing without having to grind down the whole geometry of the blade.Of course if you want to grind in a whole convex geometry like Virtuvoice(did I get his name right?)go for it and you will have an even stronger knife, but a lot of work that a klutz like me would not even try.For me, simple is good.

Leo the ancient as opposed to Leo the navigator! ROTFLMAO!"

I hope this helps you.

Cheers
Leo
Never go anywhere without your knife!
Gibbs rule number 9

Leo James Mitchell
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Sharpening a Convex Edge Question 6 months 2 weeks ago #16500

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When making the facets as light a touch as possible with as few strokes as possible. Then "blend" them in with your strops. It is okay to work the strops through all the angles. Just take your time and have fun!
The definition of insanity is to do the same thing over and over again and expect a different result?
An old Irish toast, May the wind always be at your back, may you always have work and may you be in heaven a half hour before the devil knows your dead. Cheers!
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Sharpening a Convex Edge Question 6 months 2 weeks ago #16508

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Ah the Irish have a way with words! What Eamon says is more clear than my words. Have fun! Use a light touch and use the strops to gently blend the shoulders you created into that robust axe-shaped edge that is excellent for camp craft, batonning and general heavy duty. It may not make the best slicer for ripe tomatoes, but it is a wonderful all round edge.

Leo
Never go anywhere without your knife!
Gibbs rule number 9

Leo James Mitchell
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Sharpening a Convex Edge Question 6 months 2 weeks ago #16516

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Thanks all for the helpful insights.

I guess I am still a little confused about the ORDER of angles: i.e. the progression of sharpening when trying to form a convex edge on the WEPS.

Maybe the order makes no difference?

Because in Clay's video with the Sebenza he seems like he puts the lowest angle on first, a 17, then puts on the highest, a 20, then counts down by degress back to the lowest. So: 17, 20, 19, 18, 17. Then strops at the lowest angle (the 17).

But in the tutoial link Eamon posted, the instructions say the angle progression should be 17, 18, 19, 20. Then strop at 17 degrees.

Am I not being clear? Do you guys understand why I'm confused? Is the order of the angles sharpened when trying to produce a convex edge significant or does it not really matter what order then are done in?

Thank you again for helping out this noob, :)
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Sharpening a Convex Edge Question 6 months 2 weeks ago #16518

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Just think of it as an arc it can be started from either end just try not to remove too much precious steel do it on a Thrift store knife or a Chinese knife first at least the steel is soft on the Chinese so there will be less wear on the stones ; but wear and steel chalks up to experience and making errors is how to learn and doing it helps to understand through experience.

Have you ever made a flow chart to prepare a cup of coffee there are quite a few steps for that it works out to about a side and a half of A4 paper .

The convex is not so bad and it is valuable experience for you on the WE.

Sometimes I think it is possible to be over technical when a little spontaneity is what is required its also more fun that way.
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Sharpening a Convex Edge Question 6 months 2 weeks ago #16519

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mctrinket wrote:
Thanks all for the helpful insights.

I guess I am still a little confused about the ORDER of angles: i.e. the progression of sharpening when trying to form a convex edge on the WEPS.

Maybe the order makes no difference?

Because in Clay's video with the Sebenza he seems like he puts the lowest angle on first, a 17, then puts on the highest, a 20, then counts down by degress back to the lowest. So: 17, 20, 19, 18, 17. Then strops at the lowest angle (the 17).

But in the tutoial link Eamon posted, the instructions say the angle progression should be 17, 18, 19, 20. Then strop at 17 degrees.

Am I not being clear? Do you guys understand why I'm confused? Is the order of the angles sharpened when trying to produce a convex edge significant or does it not really matter what order then are done in?

Thank you again for helping out this noob, :)

Well, I don't think you want to do it the way I highlighted in red, or you'll be constantly sharpening the edge at every step. I would do the first way... set the bevel, (17), set the edge (20), then fill in the gaps.
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