Understanding how to sharpen curves and recurves are closely related. Essentially, when you sharpen a curved blade, you have to change the approach of the blade to the stone, in order to keep the edge touching the stone in the same plane. This is very hard to describe in words, but not too hard to see in pictures or video. This motion is commonly described as "lifting the handle" as you go through the curve. That description isn't exactly accurate, but it's not too bad.
Please read Secret # 3 of the Seven Secrets of Sharpening and watch the linked video.
Once you understand sharpening curves, then you can move on to recurves. The technique is the same. You just change your approach angle in the opposite way. One way of describing this is that you drop the handle as you move through a recurve. See how that's the opposite of raising the handle as you sharpen a curve?
The other consideration when sharpening a recurved blade is using a stone or rod that will fit inside the recurve. A 3" wide stone won't fit inside the recurve of the blade you showed a picture of. But if you use the corner of the stone, it will likely fit inside the recurve. This is why you've gotten several recommendations for using a ceramic rod or a SharpMaker.
Good luck!
Brian.
Please read Secret # 3 of the Seven Secrets of Sharpening and watch the linked video.
Once you understand sharpening curves, then you can move on to recurves. The technique is the same. You just change your approach angle in the opposite way. One way of describing this is that you drop the handle as you move through a recurve. See how that's the opposite of raising the handle as you sharpen a curve?
The other consideration when sharpening a recurved blade is using a stone or rod that will fit inside the recurve. A 3" wide stone won't fit inside the recurve of the blade you showed a picture of. But if you use the corner of the stone, it will likely fit inside the recurve. This is why you've gotten several recommendations for using a ceramic rod or a SharpMaker.
Good luck!
Brian.
