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Hanging a New Handle on an Axe

Two Forest Service manuals, twenty-one years apart, disagree on the wedge, the oil and the water bucket. Here is what each one says.

An axe splitting wood

Axe handles break in one place. The Forest Service is blunt about where and why: “Wood fibers at this junction receive the brunt of the energy transferred from the ax head,” and repeated chops crush and flex them, so the section directly below the eye is “the most likely place for the handle to break.” That is from One Moving Part: The Forest Service Ax Manual, publication 1823-2812P. Buying a replacement haft is the easy part of this job. Fitting it is the part that decides whether you do it again next season.

One warning before any of it. On re-handling an axe, the acceptable literature is one agency deep. There is no land-grant extension publication on the procedure at all, so far as a search of extension sites turns up, and the two documents that matter are both from the USDA Forest Service: An Ax to Grind (9923-2823P-MTDC, 1999) and One Moving Part (1823-2812P, 2020). They are twenty-one years apart, both still hosted, and they contradict each other on four points that come up in the shop.

Picking the haft

Hickory. One Moving Part calls it “the preferred wood for ax handles,” allows oak and ash, and rules out “softwoods, such as pine, fir, and spruce.” Purdue Extension backs the material choice from the wood-properties side: the true hickories “produce the strongest wood of any of the North American commercial hardwood species,” running 50 to 78 pounds per cubic foot at 12 percent moisture.

Grain has to satisfy two conditions, not one. An Ax to Grind requires that it run parallel to the length of the handle and parallel to the wedge slot. Most people check the first and never look at the second. The grading spec is counterintuitive too. The highest grade has “not over 17 annual rings per inch of radius,” which is a mark of faster-growing second-growth timber, and the best hafts come from second-growth hickory sapwood, all white, with no red heartwood showing.

Then thin it down. “Do not assume that a stout handle is a strong handle,” says One Moving Part. “A handle that is too big and bulky is more prone to break than a thinner, properly shaped handle,” because a thinner handle flexes and that whip lets the head hit harder with less shock coming back up your arms. The manual states flatly that most handles sold today are too thick. Take wood off the sides and the back on a single-bit, the sides only on a double-bit. Stay off the belly, the throat and the knob.

Getting the old one out

Saw it off first, right up against the head, and pull any steel wedges or screws out of the top. Then clamp the head. Take a drift pin and a three-pound hammer, and drive the remaining plug from the bottom of the eye out through the top. If it will not budge, One Moving Part says to drill several relief holes into the wood to reduce friction, watching out for buried metal wedges.

Never hit the head itself with steel. That instruction is explicit: “Never pound an ax head with a metal hammer or mallet to loosen or remove the head.” Sand the factory paint, varnish, shellac or wax off the new handle before you fit anything, per An Ax to Grind, which also means a painted handle is not a protected handle. The other Forest Service trail-tools publication puts it more sharply: coatings “can hide flaws in materials or construction.”

Fitting and wedging

Work the new handle down with an aggressive wood rasp or a four-in-hand until it seats tight, bringing the shoulder all the way up to the bottom of the eye. Do not rasp the whole length of the handle while you are doing it. Drive it home from the bottom with a wooden mallet on the butt.

Two tests confirm the hang. Sight down the cutting edge and it should line up with the center of the knob. Lay the axe on a flat table with the edge and the handle both touching, and the edge should contact about one-third of the way up from the heel.

Here the manuals part ways. An Ax to Grind says to deepen the saw kerf to roughly two-thirds the depth of the eye and to use a wedge of well-seasoned yellow poplar or another hardwood, about three inches long, leaving a quarter to a half inch proud before you trim it with a coping saw. One Moving Part drives the wedge one-half to three-quarters of the depth of the head and prefers softwood, on the reasoning that softwood expands and contracts with humidity more readily, while granting that hardwood is acceptable. Both agree on the thing that actually wrecks handles: no metal. “Never insert iron, steel, screws, nails, or any other metal object down in the wooden wedge to tighten the handle,” because metal splits the hickory grain. Steel crosstie wedges are out for the same reason.

Coat the wedge and kerf with dipropylene glycol, sold as a wood-swelling compound, and specifically not with linseed oil, which One Moving Part warns “may act as a lubricant” at that joint. If you want a mechanical belt on top of the wedge, the manual gives a pin spec: a 5/32 or 3/16 inch roll pin through head and handle, placed about one-fifth of the way up from the bottom of the head, drilled last.

How much handle should stick out the top? The 2020 manual gives two answers in one chapter, “¾ to 1 inch” in one place and “about ¼ to ½ inch” in another. Start long, around 1 to 1½ inches, and trim, which is what both figures are consistent with. Under a half inch of wood above the eye is the floor.

Oil, and the water myth

Linseed oil goes on the handle, not in the eye. One Moving Part describes soaking a new haft in a length of 3-inch PVC filled with about a gallon of oil and gives a hard time limit: twenty minutes. Longer and the wood “will become too saturated and sticky or gummy.” After that, the schedule is once a day for a week, once a week for a month, once a month for a year, once a year after that. The two manuals do not agree on which oil. An Ax to Grind prefers raw and treats boiled as the fallback; One Moving Part says raw or boiled without picking.

Which brings up the bucket of water. Three Forest Service publications give three positions on soaking a loose head, which is worth knowing before you take anybody’s word for it. Handtools for Trail Work permits it as a field expedient. An Ax to Grind allows it only for short-term emergency tightening and notes the water “dries out rapidly, leaving the head looser than before you started.” One Moving Part, the newest of the three, calls it “ill advised” and explains the damage: as the wood in the eye swells, the head constricts it and crushes fibers “that never fully recover.” The correct fix for a loose head, per the same chapter, is resetting the wedge with a few mallet taps or pulling it and driving a thicker one.

Two things the literature simply does not give you. There is no numeric fit tolerance anywhere, no thousandths, no gap figure, only words like “tightly” and “snug.” And there is no moisture-content spec for a replacement handle, despite how often an 8 percent figure gets repeated. If you want a number for those, nobody with standing has published one.

Sources

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