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View Full Version : What is your ideal angle for sharpening gyutos?



bechler
12-14-2012, 08:39 PM
Been playing around with angles on different knives and just curious what others prefer.

Benuser
12-14-2012, 08:55 PM
Most will end up with some 10-12 degree right, 15-16 left. If you've set a good convex relief bevel right it isn't that important, really.

kalaeb
12-14-2012, 09:29 PM
I am dont know the exact angles I use. I would guess in the range of 12-14 degrees. Sujis are a little less, prob 10-12.

Mingooch
12-14-2012, 11:27 PM
If it has a high HRC 62+ I can usually aim for 11 deg per side and it will hold pretty well. I go closer to 12-13 if it is closer to 60 HRC

RRLOVER
12-14-2012, 11:54 PM
I have settled on 16-18*.......I used to do the 10-12* but I feel at that angle the edge degrades quickly and you end up sharpening more often.

RRLOVER
12-15-2012, 12:27 AM
I have settled on 16-18*.......I used to do the 10-12* but I feel at that angle the edge degrades quickly and you end up sharpening more often.

Correction....I just busted out my wixey and I am at 14-16*

tk59
12-15-2012, 02:14 AM
Most will end up with some 10-12 degree right, 15-16 left. If you've set a good convex relief bevel right it isn't that important, really.Pretty much this but it does vary with the steel.

bechler
12-15-2012, 11:18 AM
Convex relief bevel?

Benuser
12-15-2012, 11:26 AM
Convex relief bevel?
indeed, on the right side, in line with the convex blade. This applies to double bevelled J-knives, with a convex right side and a flat left one.

bechler
12-15-2012, 11:39 AM
Right, I wasnt sure if he meant that he sharpened the knife differently to achieve a convex relief bevel.

Cadillac J
12-15-2012, 01:19 PM
My gyutos are probably about 10 degrees per side with usually a 90/10 or 80/20 asymmetry.

Keith Neal
12-15-2012, 02:37 PM
Correction....I just busted out my wixey and I am at 14-16*

How do you measure the edge bevel angle with a Wixey? I would like to check my gyutos but don't know how to check them accurately.

RRLOVER
12-15-2012, 04:09 PM
How do you measure the edge bevel angle with a Wixey? I would like to check my gyutos but don't know how to check them accurately.

I use a wixey digital angle finder.You zero it on the stone then place it on the blade.A very useful tool,I would be lost without it.

tk59
12-16-2012, 01:26 AM
Right, I wasnt sure if he meant that he sharpened the knife differently to achieve a convex relief bevel.Sometimes I'll sharpen at less acute angles or put a microbevel on a knife if the edge doesn't hold adequately.

bieniek
12-16-2012, 11:52 AM
I dont microbevel my edges and as a matter of fact i often eat fruits of that.

Depends whats your preference.
Some time ago I made thread about the difference in sharpness versus different sharpening angles. Conclusion was it does very little.

Since then I made up my mind and I think its not the sharpness but how the edge behaves with different angles. Or how you perceive it.

Just test, test, should not take more than 3 months, and find what angle fits you, or the feedback when cutting you like.
Some people like sharp but not so sharp, if you know what i mean.

Why would that be ill in any way?

stevenStefano
12-16-2012, 06:51 PM
I'd say my angle is fairly low, below 15 at least, not quite sure how low. I've tried higher angles but I prefer my own, I prefer the better cutting and I don't think making it higher improves the edge retention enough to make it worthwhile. Everyone has "their own" angle

Doug8066
12-18-2012, 05:23 AM
Lots of different answers, but the common factor is about 12 - 15 degrees. Myself, I use about 14 - 15 degrees.
IMHO - it's just NOT crtitical the exact edge angle.
If the edge is really sharp, it will cut beautifully, and you would not know the difference between a 13 degree or 16 degree edge, Edge sharpness is what counts.
Aim for a 0.5 to 1.0 Micron edge. That is a really killer edge that you can get by using a CrO on leather strop, or a 3M PSA 0.3 micron strop. Check Dave Martell's videos for more detail.
Good Luck
Kiwi Doug:biggrin:

Lefty
12-18-2012, 06:03 AM
No idea. Based on some chart that calculated based on your blade height and mm's off the stone, I was something like 12-14, but I honestly don't remember or really care. My angle is that it doesn't matter too much, as long as you have a thin blade BTE and a smooth transition from edge to face.

andygraybeal
12-18-2012, 09:59 AM
No idea. Based on some chart that calculated based on your blade height and mm's off the stone, I was something like 12-14, but I honestly don't remember or really care. My angle is that it doesn't matter too much, as long as you have a thin blade BTE and a smooth transition from edge to face.

Lefty, what does BTE mean?

adletson
12-18-2012, 10:17 AM
Behind the edge.

NO ChoP!
12-18-2012, 11:06 AM
Different knives, different angles. A knife used for root veg, squash, etc... 18'ish. A laser used for brunoise...9'ish. An all around prep machine...14'ish. A protein slicer....12'ish.

I have different knives with different angles, that I use for different tasks.

And as far as knowing what angle I'm at. Simply knowing a 15 degree angle, and estimating off that works for me.

Lefty
12-18-2012, 11:12 AM
In my experience, lasers are only I need of tiny bevels, because of how thin they already are. Maybe it's just me, but somewhere along the lines, I developed into a "small bevel sharpener". Jon, is this your doing?

bechler
12-21-2012, 12:27 AM
Do you find that when you sharpen at a lower angle you get a much larger bevel? I've been playing around with trying to minimize bevel size while keeping my angle around 16-18. It seems the lower angle you go the larger the bevel

NO ChoP!
12-21-2012, 12:47 AM
A ten degree angle on a Konosuke is pretty small....

I think I once had steeper than that on a thinned Takeda, it too was a small bevel.

panda
12-21-2012, 01:52 AM
i like 15 deg 50/50

EdipisReks
12-21-2012, 02:57 AM
i like 15 deg 50/50

that's going to mess up the geometry on a lot of gyutos awful quick.

bechler
12-21-2012, 12:09 PM
Interesting. Any tips on getting as small of a bevel as possible?

Benuser
12-21-2012, 12:30 PM
Interesting. Any tips on getting as small of a bevel as possible?
thinning behind the edge! My bevels are barely visible.

Benuser
12-21-2012, 12:36 PM
https://www.youtube.com/watch?v=twP_05UEHIM&list=PLEBF55079F53216AB

CompE
12-21-2012, 07:49 PM
I don't even keep a consistent angle along the entire edge. I make a couple of inches near the tip slightly more acute than the rest of the blade, and I make the last inch by the heel a little more obtuse. The tip is a little extra sharp and the heel is a little extra sturdy. When I first started that happened by accident and I found that I like it that way.

Benuser
12-22-2012, 04:30 PM
I like some differentiation as well. A dead flat section with a sturdy symmetric edge - Ó la franšaise - near the heel. Son Allison suggested somewhere to rather strengthen the tip somewhat because it has so much contact with the board.