Clamp the axe so the bit sticks out over the bench, file into the edge on the push stroke at about 25 degrees until a thin burr forms along the whole bit, flip and repeat, then hone both sides in small circles with a puck stone, coarse side and then fine. Strop or hone off the last of the burr and wipe the head with oil. That's the whole job, and on an axe that's only dull it takes about fifteen minutes. The rest of this guide covers the angle and the tools, plus fixes for the problems that make people give up. Buying a tool instead of filing by hand? Our best axe sharpener picks sort stones, pucks and files by axe type.
The angle and the shape you're aiming for
Council Tool, a US axe maker, says the edge should ideally be "about 25 degrees (and slightly convex)." The US Forest Service's ax manual breaks it into two parts: a main bevel of about 18 degrees and a narrow microbevel of about 25 degrees right at the edge, with working ranges of 17 to 21 and 25 to 32 degrees. The microbevel is tiny, perhaps 1/16 inch wide along the edge, and it's what keeps a thin bevel from chipping.
Neither source says whether its figure is per side or included, which is why the practical method is to match what your axe already has. Color the edge with a marker, take one light stroke with the file, and see where the ink comes off. The axe sharpening angle guide has a cardboard notch gauge you can cut in five minutes to check it.
Tools you need
| Tool | What it's for | Example |
|---|---|---|
| Clamp or vise | Holds the axe so both hands are free | Any bench vise or two C-clamps |
| Axe or mill bastard file (with a guarded handle) | Removes steel, reshapes, takes out nicks | Nicholson 8" axe file (double cut one side, single cut the other) |
| Puck stone | Hones the bevel after filing | Lansky Puck (120/280 silicon carbide) or DDF IohEF 180/320 |
| Fine diamond or hard stone | The microbevel and field touch-ups | SHARPAL 181N (325/1200 diamond, leather sheath) |
| Leather strop | Removes the last burr | BeaverCraft strop |
| Heavy leather gloves, eye protection | Both Council Tool and the Forest Service call for gloves | Whatever fits |
Council Tool says to guard your file with a piece of leather, wood or fire hose; the Forest Service wants a handle with a guard on it. A bare file tang is how people cut their palms on the return stroke.
Step by step: filing the edge
- Clean the head. Scrub off sap and pitch with a solvent and a rag, and knock off loose rust with a wire brush, so you can see the bevel.
- Clamp the axe to the bench with the bit sticking out over the edge, at a height where you can push with both hands. Good light matters; you'll be reading reflections off the steel.
- Color the bevel with a marker.
- Put the file on the bevel at your angle and push it into the edge, toward the center of the head. Lift it off for the return. Council Tool: "Always file or grind into the edge of the axe." The Forest Service adds that filing from the back toward the edge can roll the edge over, and that sawing back and forth does nothing, because a bastard file only cuts on the push.
- Work along the whole bit, heel to toe, in a fan shape. The Forest Service suggests leaving the toe and heel corners slightly thicker than the middle, since those unsupported corners are the first to chip.
- Keep pressure even. Beginners press harder mid-stroke, which files a hollow into the middle of the bit.
- Count your strokes. When you can feel a burr (a rough lip of steel) along the entire back side of the edge, flip the axe and do the same number on the other side, until the burr moves back.
- Tap the file now and then to clear filings, and brush it with a file card if it clogs.
Sight down the edge from the toe under a bright light. A sharp edge reflects nothing; any thin line of light is a dull spot still to file.
Step by step: honing with a puck
Filing leaves a rough edge with a burr on it. The puck refines it. The Forest Service manual describes it this way: wet the stone, work the coarse side in small circles along the side of the bit and up to the edge until a burr forms, then flip and repeat, then do the same with the fine side.
- Hold the puck by its rim or finger groove, never with fingertips on the face that passes the edge.
- Water works on most pucks. If a stone has been oiled, keep using oil on it; the manual notes you can't go back to water once it's oiled. Our sharpening stone oil guide covers which oil.
- Count circles on each side so the edge stays centered.
For the microbevel, take a fine diamond plate or a Hard Arkansas stone and give the very edge a few light strokes at a slightly steeper angle than the bevel. The Forest Service suggests a fine diamond stone or a Hard Arkansas for this step; our Arkansas stone guide explains the grades.
Finish: strop and protect
The Forest Service manual calls stropping the best way to take off the last wire edge. Draw the head backward over leather glued to a board so the edge trails and never cuts into the leather, keep pressure on the back of the head rather than the edge, and do a few passes per side. The how to strop a knife guide shows the same motion on a smaller blade.
Then wipe the head clean and rub on a light coat of machine oil or paste wax to keep rust off, and put the sheath back on.
Which tool for which damage
| What the edge looks like | Start with | Then |
|---|---|---|
| Just dull, no visible damage | Fine side of a puck | Strop |
| Rolled or flattened in spots | Coarse puck | Fine puck, strop |
| Small nicks | File | Puck coarse to fine, strop |
| Big chip or rounded toe | File (patiently) or careful reshaping | The full sequence above |
| Edge filed back past the hardened zone | Consider replacing the head | See below |
That last row comes from the Forest Service manual: only the edge of an axe is hardened. Fixing a big chip can mean filing past that hard zone into the softer cheek steel, and an edge made of soft steel won't hold up. If the bit has been filed back that far, a new head can be the better buy.
Power tools: grinders and sanders
Council Tool's rule is short: "Never use a high-speed dry bench grinder to sharpen your axe." The Forest Service manual allows power tools for reshaping the head, but not for the cutting edge itself. Keep the sander off the edge, lift often to check heat, and stop if the steel turns blue or purple, because that color means the temper is already gone. A file costs less than a ruined head and does the job in minutes. The same heat and cooling rules apply to knives; our bench grinder knife guide covers them.
When it isn't working
The edge is off center. This Old House's fix is to take more off the thick side until the edge sits in the middle again. Stroke counts help keep it there.
It still won't bite. You probably stopped before the burr ran the full length. Color the edge again and look for unfiled shiny spots.
It dulls after a few swings. Either the edge is too thin for the wood you're cutting (add the steeper microbevel), or it's been filed into soft steel.
Splitting mauls and hatchets
A splitting maul or splitting axe works as a wedge, so it needs a clean edge with no chips and a steeper bevel than a felling axe. Don't thin it out; a fine edge will roll on knots. A hatchet follows the same steps as a full axe, though a hatchet used for carving or kindling can take a thinner edge and a fine stone finish. The same file and puck routine works on machetes and on pruning shears and loppers.
If you only buy one thing beyond a file: a dual-grit puck. It does the honing at home and fits in a pocket for the woodlot.
Angles and safety guidance from Council Tool's "How to Sharpen an Axe" and the US Forest Service ax manual, chapter 8 (Council Tool, USFS), read October 13, 2026. Tool details from Amazon listings checked the same day. How we research · Affiliate disclosure