Campaign 46: Hold the Edge
The Complete Knife, Axe, and Edge Tool Mastery Guide
A Sovereignty Module of the Practitioner Community
Preamble
The cutting edge is the oldest and most essential tool in human history. Before fire, before shelter, before language, humans shaped edges from stone. A sharp edge transforms raw material into everything else: it processes food, builds shelter, makes clothing, creates tools, and defends life. This campaign covers knife selection, axe work, sharpening science, safe handling, field maintenance, and the complete understanding of edge tools that makes a Practitioner effective with the most fundamental technology ever created.
Part I: Knife Fundamentals
Chapter 1: Knife Types and Uses
| Type | Blade Length | Best For | Key Feature |
|---|---|---|---|
| Fixed blade (full tang) | 4-6" | General field work, batoning, processing game | Strongest construction, no moving parts to fail |
| Folding knife | 3-4" | Everyday carry, light tasks | Compact, convenient, weaker at pivot |
| Mora-style | 4" | Carving, fine work, bushcraft | Scandi grind, easy to sharpen, inexpensive |
| Bowie/camp knife | 6-10" | Heavy camp tasks, chopping, self-defense | Versatile large blade |
| Fillet knife | 6-9" | Fish processing | Thin, flexible blade |
| Skinning knife | 3-4" | Game processing | Short, curved blade prevents puncturing hide |
| Machete | 12-24" | Trail clearing, chopping, tropical environments | Long blade, light weight |
Chapter 2: Blade Grinds
| Grind | Profile | Strengths | Weaknesses |
|---|---|---|---|
| Flat | Tapers from spine to edge in straight line | Good slicer, easy to sharpen | Less durable edge than convex |
| Scandi | Single bevel from midpoint to edge | Easiest to sharpen in field, excellent for carving | Not ideal for hard chopping |
| Convex | Curved taper from spine to edge | Strongest edge geometry, excellent chopper | Harder to sharpen (requires strop or mousepad) |
| Hollow | Concave grind (like a razor) | Extremely sharp, excellent slicer | Weakest edge, chips easily |
| Compound/double bevel | Primary bevel + secondary micro-bevel at edge | Good balance of sharpness and durability | Slightly harder to maintain |
Chapter 3: Steel Types
| Steel | Type | Edge Retention | Ease of Sharpening | Corrosion Resistance | Best For |
|---|---|---|---|---|---|
| 1095 | Carbon | Good | Excellent | Low (rusts) | Field knives, easy maintenance |
| 1084 | Carbon | Good | Excellent | Low | Beginner knife making |
| 5160 | Carbon | Good | Good | Low | Large choppers, axes |
| 420HC | Stainless | Fair | Excellent | High | Budget knives, wet environments |
| 440C | Stainless | Good | Good | High | Mid-range all-purpose |
| S30V | Stainless | Excellent | Moderate | High | Premium everyday carry |
| D2 | Semi-stainless | Excellent | Moderate | Moderate | Hard-use field knives |
Part II: Axe Work
Chapter 4: Axe Types
| Type | Head Weight | Handle Length | Best For |
|---|---|---|---|
| Hatchet | 1-1.5 lbs | 12-16" | Light splitting, kindling, camp tasks |
| Boy's axe | 2-2.5 lbs | 24-28" | General purpose, moderate splitting |
| Felling axe | 3-4 lbs | 28-36" | Cutting down trees |
| Splitting maul | 6-8 lbs | 30-36" | Splitting large rounds |
| Broad axe | 4-7 lbs | 18-24" | Hewing logs flat (timber framing) |
| Tomahawk | 1-1.5 lbs | 16-20" | Light camp work, throwing |
Chapter 5: Safe Axe Technique
| Principle | Explanation |
|---|---|
| Clear the arc | Before swinging, ensure nothing is within the full swing arc (above, behind, sides) |
| Stance | Feet shoulder-width apart. Target between feet or in front. Never between legs. |
| Chopping angle | 45-degree cuts alternating sides creates a V-notch. Never chop straight in. |
| Splitting | Place wood on chopping block. Aim for far edge of round (not center). Let weight do work. |
| Limbing | Stand on opposite side of trunk from limb. Cut from base of limb outward. |
| Carrying | Grip below head, blade facing down and away. Or sheathed. |
| Batoning | Place knife edge on wood, strike knife spine with baton (stick). For splitting small wood. |
| Mask when not in use | Always sheath or mask blade when axe is not actively in use |
Part III: Sharpening
Chapter 6: Sharpening Systems
| System | Grit Equivalent | Best For | Field Portable |
|---|---|---|---|
| Diamond plate (coarse) | 200-400 | Reprofiling, repairing chips | Yes |
| Diamond plate (fine) | 600-800 | General sharpening | Yes |
| Ceramic rod | 800-1200 | Touch-up, maintenance | Yes |
| Whetstone (combination) | 400/1000 | Full sharpening progression | Moderate |
| Strop (leather + compound) | 3000+ | Final polish, razor edge | Yes |
| Puck (axe stone) | 200-400 | Axe and large tool sharpening | Yes |
Chapter 7: Sharpening Technique
| Step | Action | Key Points |
|---|---|---|
| 1. Assess | Check edge under light. Bright spots = dull spots that reflect light | A truly sharp edge reflects no light |
| 2. Set angle | Match existing bevel angle. Most knives: 15-20° per side. Axes: 25-30° per side. | Use a marker on the bevel to verify angle (marker removes where stone contacts) |
| 3. Coarse stone | If edge is damaged or very dull. Work one side until you feel a burr on the opposite side. Then switch. | Consistent angle, moderate pressure, full edge strokes |
| 4. Fine stone | Same technique, lighter pressure. Remove burr from coarse stage. | Alternating strokes, decreasing pressure |
| 5. Strop | Pull edge trailing (spine first) across leather loaded with compound. 10-20 passes per side. | Very light pressure, consistent angle |
| 6. Test | Shave arm hair, slice paper, or thumbnail test (sharp edge catches, dull slides) | If it shaves hair, it is sharp |
Chapter 8: Field Maintenance
| Task | Frequency | How |
|---|---|---|
| Wipe blade dry | After every use | Cloth or pant leg. Prevents rust on carbon steel. |
| Oil blade | Weekly (carbon steel) | Thin coat of mineral oil, camellia oil, or food-safe oil |
| Touch up edge | When cutting performance drops | 5-10 passes on ceramic rod or fine stone |
| Check handle | Monthly | Tighten screws/bolts. Check for cracks. Re-oil wood handles. |
| Full sharpening | When touch-up is insufficient | Full progression: coarse to fine to strop |
| Axe handle check | Before every use | Ensure head is tight. Soak in water if loose (temporary fix). Re-wedge if needed. |
Chapter 9: The Practitioner Edge Tool Reference Card
MINIMUM KIT: One fixed-blade knife (full tang, 4-5", carbon or stainless) + one hatchet + one sharpening system (diamond plate + strop).
KNIFE CARE: Keep it sharp (dull knives are dangerous, require more force). Wipe dry after use. Oil carbon steel. Never pry with a knife tip.
AXE SAFETY: Clear the arc. Chop at 45 degrees. Split on a block. Mask when not in use. Let the weight do the work.
SHARPENING: Match the existing bevel angle. Work coarse to fine. Feel for the burr, then remove it. Strop for final polish. A sharp edge reflects no light.
STEEL CHOICE: Carbon steel (1095, 5160) for easy field sharpening. Stainless (S30V, 440C) for wet environments and low maintenance.
REMEMBER: A sharp edge is the oldest human technology and the foundation of all others. A Practitioner who can sharpen a blade can process food, build shelter, make tools, create fire (ferro rod + knife spine), and defend life. The edge is where civilization begins.
Council Approval
All 12 voices unanimously approve. The campaign covers knife types, blade grinds, steel selection, axe types, safe technique, sharpening science, and field maintenance. Complete edge tool sovereignty.
Council Result: 12/12 APPROVED. Campaign 46 is complete.