The grind is the shape ground into the sides of the blade behind the cutting edge. It is not the steel and it is not the edge angle you touch up on a stone, though it sets the stage for both. Two knives in the same steel can carve, split, and sharpen very differently because of how their bevels are shaped. For bushcraft the three that matter are scandi, flat, and convex. Get the difference and you can pick a knife on purpose instead of by price.
What a grind actually is
Start with the blade as a flat bar of steel. To make it cut, metal is removed from the sides until they meet at an edge. The grind is the profile of that removal seen end on, if you sliced the blade in half and looked at the cross section. A steeper, thicker profile behind the edge is stronger and pushes wood apart. A thinner, more acute profile slices with less effort but has less steel supporting the edge.
Two terms get mixed up, so pin them down. The primary grind is the big bevel that thins the blade down from the spine. The secondary bevel, or microbevel, is the tiny final facet at the very edge. Some grinds have both. One grind, the scandi, mostly skips the secondary and sharpens on the primary bevel itself. That single fact drives most of what follows.
If you are still sorting out what separates a working bushcraft blade from a general knife, start with what makes a bushcraft knife, then come back here for the grind detail.
Scandi grind
A scandi grind, short for Scandinavian, is a single flat bevel that runs from partway up the blade straight down to the edge, with no secondary bevel. On a classic scandi the bevel is wide and easy to see, and the edge is simply where those two flat bevels meet.
How it cuts wood. This is where scandi shines. The flat bevel acts like a built in guide. Lay it against the wood and it bites in at a controlled depth, then rides through the cut. For carving, feather sticks, notches, and pot hooks it is hard to beat, because the geometry does the depth control for you. It is not the best slicer for food or rope, where the wide bevel can wedge, but bushcraft is mostly wood and scandi is built for wood.
Field sharpening. Easiest of the three by a wide margin. Because you sharpen the whole flat bevel, you lay it flat on a stone and the bevel itself tells you the angle. There is no guessing and no jig. A beginner can put a working edge back on a scandi with a small stone on a stump. That alone makes it the sensible first grind.
Durability. The edge sits at a fairly acute angle, so it is keen but a bit more prone to chipping or rolling if you hit a knot or bone. For normal wood work it holds up fine. It is less suited to hard chopping and prying.
Best use. Carving and general bushcraft, and anyone learning to sharpen. The Morakniv Companion is the reference point here: an inexpensive, true scandi that carves cleanly and takes a fresh edge in minutes. It is the grind most bushcraft skills are taught on.
Flat grind
A flat grind tapers in a straight line from somewhere near the spine down toward the edge, then finishes with a small secondary bevel that you actually sharpen. A full flat grind starts high, near the spine, and thins the whole blade. This is the most common grind on general use fixed blades.
How it cuts wood. A flat grind is the all rounder. The thin cross section slices well, so it handles food prep, rope, and general camp cutting better than a scandi, while still carving wood decently. It does not have the scandi's self guiding bite for fine woodwork, so controlled carving takes a little more feel, but it gives up less on every other task.
Field sharpening. Straightforward, though not as foolproof as scandi. You maintain the small secondary bevel, so you have to hold a consistent angle yourself rather than laying a whole bevel flat. With a guided sharpener or a bit of practice it is quick. Our walkthrough in how to sharpen a bushcraft knife covers holding that angle by hand.
Durability. Good, and tunable. Because you set the secondary bevel angle, you can grind it more acute for slicing or leave it more obtuse for a tougher edge that shrugs off harder use. That flexibility is a real advantage.
Best use. One knife that does a bit of everything, from batoning to food. The ESEE 4 is our flat grind example: a thick, tough flat ground blade that carves, slices, and takes abuse without a fuss.
Convex grind
A convex grind curves gently from the blade down to the edge, with no flat bevel and no hard shoulder. Picture the profile of an axe bit rounded into the edge. There is more steel packed right behind the cutting edge than on the other two grinds.
How it cuts wood. That mass behind the edge makes a convex a strong splitter and chopper. It parts wood fibers and pushes them aside with less risk of wedging and sticking. It is a capable carver too, though the rounded geometry gives less of the scandi's positive bite for fine detail. For heavier wood work it is the toughest of the three.
Field sharpening. The hardest to keep true. There is no flat to rest on the stone, so you either use a stropping motion on a soft backing like a leather strop or mousepad, or you rock the blade slightly through the stroke. It is very forgiving of a wandering angle, and touch ups on a strop are fast, but restoring a badly dulled convex to a clean curve takes more skill than the other two.
Durability. The best of the three. The thick, unbroken curve behind the edge resists chipping and rolling, which is why axes and heavy chopping blades use it. It takes hard use and keeps a working edge.
Best use. Chopping, splitting, and hard use where edge toughness matters most. The Benchmade Bushcrafter 162 is a common knife to run with a convex edge, and its thick S30V blade suits that heavier duty.
The grind is a trade between how easily a blade cuts and how much abuse the edge takes. Scandi leans toward easy control, convex toward toughness, flat sits in the middle.
Sabre and hollow, in brief
Two more grinds come up, though neither is a first pick for bushcraft. A sabre grind is like a flat grind that starts lower on the blade, around the middle, leaving the upper half at full thickness. It keeps the blade stiff and strong for the price of some slicing ease, and a scandi is really just a low, short sabre without a secondary bevel. A hollow grind is ground concave, scooped out on each side, which makes an extremely thin, keen edge that slices and shaves beautifully but is weak behind the edge. Hollow grinds suit hunting and skinning knives more than wood work, where a knot can chip that thin edge.
Which grind should you pick
There is no single best grind, only the right one for how you work. Here is the short version.
- Scandi for most bushcraft and for beginners. It carves wood the best of the three and it is by far the easiest to sharpen in the field, which matters more than anything when you are learning. Start here.
- Flat for versatility and food prep. If one knife has to carve, baton, slice food, and cut cord, a flat grind gives up the least across all of it. It is the sensible do everything choice.
- Convex for durability and chopping. If your knife earns its keep splitting and taking hard use, the toughness behind a convex edge pays off, as long as you are willing to strop it to keep it true.
If you are buying one knife to learn on, a scandi like the Companion is the honest answer. If you want to compare grinds across price points and see how each plays out in a real blade, the best bushcraft knives roundup lines them up side by side. Whichever grind you land on, learning to maintain it is the skill that actually keeps a knife cutting, so pair the pick with how to sharpen a bushcraft knife.
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