What it is: On a convex grind, the sharp edge is produced by symmetric, gently curved surfaces. Where the curvature begins (high or low on the blade) can produce a full convex, a saber convex or even a Scandi convex grind. Many knife aficionados consider a convex grind the strongest and most durable profile.
What it's good for: Hunting, woodworking, food preparation, axes, general use.
How to sharpen it: Sharpening a convex grind requires an abrasive surface that ever-so-slightly "gives" to follow the curvature of the blade -- generally, a leather strop or hone (a piece of leather affixed to wood base, with abrasion provided by stropping compound or sandpaper).
What you may not know: A practiced hand can sharpen a convex-ground knife on a hard surface or a flat stone. Because it's relatively difficult to master, however, this technique is best reserved for emergencies in the field.
For more information about sharpening your knives, whatever the grind, visit our Knife Sharpening page.