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Sharpening Your Axe

Sharpening Instructions from Granfors Bruks Axe Guide


The sharpening of an axe is done in several steps, depending on how worn down the axe head is.


1. Major nicks and damage can be filed down with an emery wheel, but do not overheat the steel or it will lose its temper. Cool often! The easiest method is to use a fine-toothed flat file. Make sure that the edge retains its original shape – file the same amount on each side and along the whole edge. The whole bevel face should be in contact with the wheel/file if it is a straight bevel face.

2. Minor damage and normal wear can be tackled on a wet bench grinder or with a coarse handheld whetstone to re-establish the sharpness of the edge. Always keep the original shape of the edge. If you have an axe with a straight bevel face: place the whole bevel face against the grindstone. When grinding on a rotating bench grinder, first place the rear part of the bevel face on the grindstone and then angle the edge until the whole bevel face is against the stone. The choice of grinding with or against the rotation of the grindstone is a matter of taste: Going against it produces less of a burr. Going with it avoids the risk of digging into the grindstone.

Stand steady with one foot placed beside the grinder and support yourself with the axe against a supporting stay on the grinder or with your elbow against your hip. Move the axe slowly back and forth during grinding so that the whole edge is evenly ground. Also grind evenly over the breadth of the grindstone, otherwise it will soon become warped and difficult to use. Do not leave water in the grinder’s drip cup, as this reduces the quality of the stone. An alternative to the rotating grinder is a coarse handheld whetstone (axe stone).


3. Finally, hone the edge to remove the burr or ‘feather edge’. The feather edge occurs when the very tip of the edge has become so thin that it bends up. The feather edge is only a few tenths of a mm long, but can clearly be felt if you slide your fingertips carefully down to the edge. The honing requires first a coarse then a finer whetstone. Moisten the whetstone with water (mainly for clay and sandstone whetstones) or oil (mainly for carborundum or Arkansas whetstones), e.g. honing oil or sewing machine oil. 

Move the whetstone along the edge in a rotating motion. Hone along the edges of the whetstone rather than in the middle to avoid gradual cupping of the stone. Turn the axe frequently and hone both sides to remove the feather edge. Wipe off the whetstone occasionally so that the burrs do not damage the edge. Also give the whetstone a thorough wipe down before putting it away.

4. To make the cutting edge even keener, it can be stropped against a length of leather after honing. Run each stroke away from the cutting edge.