Woodsman Guide: An Advanced Bushcraft Book

What Sharp Means

Keep the angle steady, use light pressure, raise the burr, remove the burr, and test before the tool goes to work.

1. A Sharp Edge A sharp edge is a thin apex where two bevels meet. A dull edge is rounded, damaged, or folded. It asks you to push harder. More force makes a slip more likely. A sharp tool is safer because it needs less force, but only when you control it. Keep the edge pointed away from your body, keep your free hand out of its path, and stop when attention wanders.
2. Match The Bevel Match the bevel to the job. A low angle makes a keen slicing edge but wears faster. A higher angle stands up better to chopping and rough work. One abrasive maker’s guide lists knife angles between 10 and 30 degrees, and the American Knife and Tool Institute recommends 10 to 15 degrees. Forest Service guidance describes a typical double-bit axe as sharpened to about 18 degrees on the clear-wood side and up to 28 degrees on the limbing side. Keep the maker’s bevel when you can, then keep that same angle on every stroke.
3. The Burr The burr is a tiny wire of steel pushed to the opposite side as the abrasive reaches the apex. It is evidence, not the finished edge. Feel for it lightly by moving a clean fingertip from the spine toward the edge, never along the edge. Work one section at a time until the burr runs from heel to tip. Then reduce pressure and remove it. A burr that remains will fold, tear, and give a false sense of sharpness.

Field check

• I keep the edge pointed away from my body.
• I keep my free hand out of its path.
• I stop when attention wanders.
• I keep the same angle on every stroke.

Safety. Keep every edge pointed away from your body. Do not sharpen beside a fire, under a tarp, or inside a tent.

1. Store The Stone Sheath a knife when it is idle. Store a stone so it cannot slide.
2. Knife With Dull Section A knife with a known dull section.

You need: Stone Or Plate (A sharpening stone or diamond plate with a stable base.)

Field check

• I keep the edge pointed away from my body.
• I keep my free hand out of its path.
• I stop when attention wanders.
• I keep the same angle on every stroke.

Safety. Keep every edge pointed away from your body. Do not sharpen beside a fire, under a tarp, or inside a tent.

Choose The System

Use the system you will actually carry and use.

1. Choose The System A stone, a diamond plate, a ceramic rod or a guided sharpener can all work, so follow the maker’s instructions for the one you own. A coarse abrasive removes damaged metal. A finer abrasive polishes the edge, and a medium abrasive between them refines the bevel when your system has one.
2. Avoid Fast Heat Avoid a fast electric grinder for a valuable woods tool, because it takes off large amounts of steel and can overheat the blade and spoil its temper. If you use a powered wheel, follow its manual, keep the guard in place, wear eye protection, and keep sparks and fragments away from people and dry tinder. Hand work gives you more feel and less heat.
3. Control The Angle Color the bevel with a marker. Lay the bevel against the abrasive and make a short test stroke. Look at the marker. A clean stripe across the bevel means your angle matches. A stripe only at the shoulder or the edge means your angle is wandering. Lock your wrist. Move your arm, not just your fingers. On a long blade, work in sections and overlap each section. Use light, even pressure. Brute force hides poor control.

You need: A Stable Base (Start with a stable bench or a stone on a non-slip surface.)

Check it. Pass: the marker shows an even stripe across the bevel. Fail: the stripe sits only at the shoulder or the edge, or the stone slides.

Field check

• I start with a stable bench or a stone on a non-slip surface.
• I color the bevel with a marker.
• I lock my wrist.
• I use light, even pressure.

Safety. Wear eye protection around powered abrasives.

The Knife Routine

Clean the blade and inspect it before you sharpen.

1. Inspect The Blade A bent tip, deep chip, loose handle, or cracked stone needs attention before abrasive work. Set the stone so the knife cannot run into your hand. Begin on a coarse stone only when the edge needs repair. Work until a continuous burr forms. Move to a medium stone with lighter pressure. Move to a fine stone only after the bevel is even. A fine stone cannot rescue an edge that never reached the apex.
2. Draw The Knife Follow the stone maker’s direction for stroke style. A simple safe routine is to draw the knife across the stone from heel to tip, with the cutting edge leading and pointing away from your hands, while keeping the bevel flat at the chosen angle, then repeat on the other side. Do not saw the edge into the stone. Do not lift the spine halfway through a stroke. Keep the same angle at the heel, belly, and tip.
3. Test The Edge When the burr has moved from side to side, lighten the pressure. Alternate a few strokes per side. Finish with spine-first passes on a charged leather strop. The strop pulls the edge away from the leather, so it does not dig in and round the apex. Wipe the blade clean. Test with paper held vertically. A good edge makes a clean slice. A torn cut means the burr remains, the angle wandered, or a section was missed.

You need: Hold The Paper (Test slowly. Hold the paper by its top edge, well above the blade.)

Check it. Pass: the burr is stropped away and the paper slices cleanly. Fail: the paper tears or the angle wandered.

Field check

• I clean the blade and inspect it before I sharpen.
• I work until a continuous burr forms.
• I keep the same angle at the heel, belly, and tip.
• I finish with spine-first passes on a charged leather strop.
• I test with paper held vertically.
• I hold the paper by its top edge, well above the blade.

Safety. Keep every edge pointed away from your body.

Axe And Field Touch Up

Choose a sharpening system, raise and remove a burr, sharpen a knife and axe with a steady angle, and maintain both edges in the field.

1. Secure The Axe An axe is sharpened with the head secured. Clamp it in a vise or brace it solidly on a log. Never work on a loose head. Keep the bit directed away from your legs and hands. Use the coarse side of a puck only when the edge needs metal removed. Follow the existing bevel with small circular or back-and-forth strokes. Raise a slight burr, turn the head, and repeat. Then refine with the fine side. The goal is an even, durable working edge, not a fragile razor.
2. Touch Up In Camp In camp, carry a puck stone, a small diamond card, a ceramic rod, or a leather strop. Touch up at the first sign of drag, tearing, or a folded section. Clean grit and sap from the tool before you work. Use light strokes and check the edge often. Small maintenance keeps a minor loss of bite from becoming a long restoration session. After sharpening, wipe the blade, protect it with its sheath, and keep the abrasive dry or oiled as its maker directs.
3. Learn It On The Table Learn it on the table: mark a knife bevel, raise a burr, strop it, and cut paper. Then in the dark: identify the stone faces and run the burr check by touch. Then wet: secure an axe on a dry log, keep grit out of the edge, and sheath the tool before rain reaches the kit.

Field check

• I clamp the axe in a vise or brace it solidly on a log.
• I keep the bit directed away from my legs and hands.
• I touch up at the first sign of drag, tearing, or a folded section.
• I protect the blade with its sheath.
• I keep the abrasive dry or oiled as its maker directs.

Safety. Never sharpen a loose axe head. Do not sharpen beside a fire, under a tarp, or inside a tent.

1. Axe Puck A dual-grit axe puck or suitable axe stone.
2. Leather Strop A leather strop and compound.

You need: Paper And Eye Protection (Clean paper, a marker, and eye protection.)

Field check

• I clamp the axe in a vise or brace it solidly on a log.
• I keep the bit directed away from my legs and hands.
• I touch up at the first sign of drag, tearing, or a folded section.
• I protect the blade with its sheath.
• I keep the abrasive dry or oiled as its maker directs.

Safety. Never sharpen a loose axe head. Do not sharpen beside a fire, under a tarp, or inside a tent.

Angle And Burr Detection

Start with a stable bench or a stone on a non-slip surface.

1. Secure The Stone Secure the stone on a non-slip surface and clean the knife.
2. Color The Bevel Color the bevel with a marker and make one light test stroke at the chosen angle.
3. Adjust The Angle Adjust until the abrasive removes the marker across the bevel instead of only at one edge.
4. Work One Section Work one section until a burr can be felt from heel to tip on the opposite side.

You need: Move From Spine (Move the fingertip from spine toward edge to check the burr without sliding along the edge.)

Check it. Pass: the marker is removed evenly and a continuous burr is detectable from heel to tip. Fail: the marker remains in a band, the angle changes between strokes, or the burr has gaps.

Field check

• I secure the stone on a non-slip surface.
• I color the bevel with a marker.
• I work one section until a burr can be felt from heel to tip.
• I move the fingertip from spine toward edge.
• I keep the wrist locked and use light, even pressure.

Safety. Keep every edge pointed away from your body.

Knife Sharpening Progression

1. Start Coarse Start on the coarse abrasive only if the edge needs repair, and work each side until the burr reaches the full edge.
2. Refine Medium Refine both bevels on the medium abrasive with lighter pressure and the same angle.
3. Polish Fine Polish on the fine abrasive, alternating sides so the burr becomes small and weak.
4. Strop Spine First Strop spine-first with compound to remove the remaining burr.

You need: Make The Cut (Wipe the blade and make a careful vertical paper cut.)

Check it. Pass: the edge has an even bevel, no detectable wire edge, and slices paper cleanly. Fail: paper tears, the edge catches, or a burr remains after stropping.

Field check

• I start on the coarse abrasive only if the edge needs repair.
• I refine both bevels on the medium abrasive.
• I polish on the fine abrasive, alternating sides.
• I strop spine-first with compound.
• I make a careful vertical paper cut.

Safety. Hold the paper by its top edge, well above the blade.

Axe Puck Sharpening

An axe is sharpened with the head secured.

1. Secure The Head Secure the axe head in a vise or brace it firmly on a log with the bit directed away from your body.
2. Follow The Bevel Follow the existing bevel with the coarse puck using small circular or back-and-forth strokes.
3. Raise The Burr Raise a slight burr, turn the head, and repeat until both sides meet at the edge.
4. Refine Both Sides Refine both sides with the fine puck face and wipe away abrasive residue.

You need: Sheath The Axe (Sheath the axe and inspect the edge before moving it or using it.)

Check it. Pass: the head stayed fixed, both bevels meet evenly, and the edge has no loose wire. Fail: the head shifts, the bevel is rounded, or the bit points toward a person.

Field check

• I secure the axe head in a vise or brace it firmly on a log.
• I keep the bit directed away from my body.
• I use small strokes and only light pressure.
• I refine both sides with the fine puck face.
• I sheath the axe and inspect the edge.

Safety. Never sharpen a loose axe head. Sheath tools when idle.

Field Edge Maintenance

In camp, carry a puck stone, a small diamond card, a ceramic rod, or a leather strop.

1. Stop At Drag Stop at the first sign of drag, tearing, or a folded section instead of forcing the tool through work.
2. Clean And Choose Clean sap and grit from the blade and choose the puck, diamond card, ceramic rod, or strop that matches the damage.
3. Use Light Strokes Use light, controlled touch-up strokes at the established bevel and check both sides often.
4. Remove The Burr Remove the burr with alternating light strokes or a spine-first strop.

You need: Store The Abrasive (Wipe the edge, sheath the tool, and store the abrasive as its maker directs.)

Check it. Pass: the tool cuts with light force, the edge has no folded wire, and the tool is clean and sheathed. Fail: the user keeps forcing a dull edge, leaves grit or sap on it, or carries it exposed.

Field check

• I stop at the first sign of drag, tearing, or a folded section.
• I clean sap and grit from the blade.
• I use light, controlled touch-up strokes.
• I remove the burr with alternating light strokes.
• I wipe the edge, sheath the tool, and store the abrasive as its maker directs.

Safety. Do not sharpen beside a fire, under a tarp, or inside a tent. Sheath tools when idle.