Pocket Knives & Multitools: Choosing, Carrying and Using Them Safely

Pocket knife or fixed blade: when is a folder enough?

A folder or multitool is enough for cutting food, opening packages, cutting cord and tape, trimming a plaster, making a notch for a tent line, whittling a small peg from a dry stick and any quick job you would otherwise do with scissors. It rides in a pocket, weighs little and, in many countries, is the easier tool to carry in public. See the knife law guide for how much easier.

A fixed blade is better when the knife is pushed, levered or hit. The pivot and the lock are the weak points of a folder: a lock can slip or break if it is loaded sideways, and a blade that folds under load closes on your fingers. So for batoning, for prying, for deep notching and for long carving sessions, a fixed-blade knife with a full or wide tang is the right tool. A fixed blade also has no crevices, so it is easier to clean and dry, which matters for food and for rust.

This is why many experienced campers carry two: a fixed blade for wood and a small folder for everything else. If you can only carry one into the woods, choose the fixed blade. If your plans are food, cord and feather sticks from a dry stick with a folding saw for the wood, a good folder is genuinely enough. A pocket-sized knife belongs on every kit list. For a very tight budget see the budget kit, which advises skipping fancy multitools in favour of a knife, a saw and cord.

Types of pocket knives and multitools compared

There is no single "pocket knife". The five types below differ in how they open, whether they lock and what else they carry. The table is generic on purpose: shapes and price classes matter more than names.

Slip-joint pocket knives

A slip-joint knife has a spring along the back that holds the blade open and closed by friction, not by a lock. It is the classic penknife. It opens with a thumbnail in a small groove (the nail nick), which in practice takes two hands. Because nothing locks the blade, a hard push on the spine can close it on your fingers, so it is a tool for pulling cuts and light work only. Its advantage is simplicity: in the UK a small non-locking folder is the one knife you may carry without a special reason (see below).

Locking folders

A locking folder holds the blade open with a catch. That makes pushing cuts safer and the knife stronger, but it adds a mechanism that must be kept clean. Locking folders often have a thumb stud, hole or flipper that lets you open them with one hand, and that is exactly the feature that turns up in German law. Strong, thin blades make them excellent for food and for fine work, but they are not a replacement for a bushcraft knife; see the two-knife system.

Multi-blade penknives

These carry a main blade plus extras: a small saw, an awl, scissors, a screwdriver, a file. Most are slip-joint in the sense that the main blade is held by a spring, although some have a lock on one blade. The tools are small, so expect small results: the saw cuts a thin stick, not a log.

Pliers-based multitools

A pliers multitool folds open to a pair of pliers with a set of tools in the handles. It is the best choice when the job is repairs: bending wire, pulling a bent peg, fixing a zip, tightening a screw on a pot handle. The handles are heavy and awkward for long cuts, and the main blade is short and thin. Many have a one-hand locking blade, which matters legally. For a camp, treat it as a repair kit tool: a small multitool is listed there at roughly 30 to 120 g.

Status: October 2026. Laws change and differ by country and state; this is general information, not legal advice. Check the current official rules, and see our knife law guide for the full picture.

Folding knife locks explained: liner, frame and back lock

A lock stops the blade from closing while you cut. All locks work by putting a piece of metal in the way of the blade's heel, the part behind the cutting edge near the pivot. Here is what the three common designs have in common and how they differ, without any specific models.

• Liner lock: a thin springy strip (the liner) inside one side of the handle moves across behind the blade heel when you open it. You release it by pushing the strip sideways with your thumb. It is common, light and simple.
• Frame lock: the same idea, but the strip is cut out of the metal handle itself, so it is thicker and usually stronger. The handle on that side is metal. It is released the same way.
• Back lock: a lever along the spine of the handle has a hook that drops into a notch on the blade's spine. You release it by pressing the lever at the rear end of the spine. It is robust and easy to check by eye.

There are other designs, and some multitools use a lock on the main blade only. All of them can fail if they are dirty, worn or loaded in a direction they were not made for.

How to check a lock

Open the blade fully. It should click or seat firmly. With the edge pointing away from you, press lightly on the spine of the blade towards the handle, without hitting it. It must not move. Then check sideways play: grip the handle and gently try to twist the blade left and right. A tiny amount of play at the pivot is normal on some knives; wobble you can see or feel is not. If the lock does not seat fully, closes when pressed or rattles, clean it first (care section for folders) and stop using it for real work.

Never test a lock by hitting the spine against a surface; a worn lock can fail on impact.

Status: October 2026. Laws change and differ by country and state; this is general information, not legal advice. Check the current official rules, and see our knife law guide for the full picture.

Blade length and steel for a camping pocket knife

For a pocket knife, small is not a flaw. A blade of about 6 to 9 cm is typical and enough for food, cord and light carving. Longer blades (above roughly 9 cm) make the knife heavier, harder to carry legally and harder to close safely; shorter blades (under about 6 cm) are weaker and fiddly for anything but tape and thread. Fixed-blade length is a different question: see the knife guide.

Steel in general terms

Steel choice sounds complicated, but only a few ideas matter for a camp pocket knife:

• Stainless steel resists rust well. It is the sensible default for a knife that lives in a pocket, a pouch or a wet kit, and that cuts food. It is usually a little harder to sharpen back to a keen edge in the field, and a good one holds its edge for a long time.
• Carbon steel takes a very sharp edge easily and is simple to touch up, but it rusts if it is left wet and stains with food acids. It darkens with use (a patina) and needs more care: see knife care for patina versus rust.
• Harder steel holds an edge longer but can chip; softer steel bends instead of chipping and is easier to sharpen. Heat treatment and thickness matter as much as the type.

One-hand opening or nail nick: why it matters legally

How a knife opens may look like a matter of taste. In some countries it decides whether you may carry it. This section follows our knife law guide, which has the verified details and the sources. Read it before you travel.

Germany: § 42a WaffG

In Germany, one-hand locking knives (Einhandmesser) are restricted: you may own them, but carrying them outside your home is restricted under § 42a of the Weapons Act. A knife counts as a one-hand knife when it can be opened with one hand and its blade locks open. A pocket knife you can only open with two hands, through a nail nick, is not covered, even if its blade locks. The blade length of such a one-hand knife does not matter; the 12 cm line applies only to fixed blades. On top of that, since 31 October 2024 every knife is banned in public events, in long-distance public transport and its stations and in knife-free zones set by the states, unless it is packed so that it takes more than three hand movements to reach. That includes a small penknife and a multitool. Details, exceptions and the "legitimate interest" are in the German section of the knife law guide.

United Kingdom: the 3-inch exception

In the UK, carrying a blade or sharply pointed article in a public place needs a good reason. The exception is a folding pocketknife whose blade has a cutting edge of 3 inches (7.62 cm) or less and which is not a lock knife. A lock knife, however short, does not qualify, and a one-hand opener that locks is a lock knife. Scotland has a parallel rule. Everything else, including fixed blades, needs a good reason that a court would accept.

Travel and flights

For flights, no knife belongs in hand luggage; pack it in checked baggage, sheathed and wrapped, and check the airline and the destination's rules. In many countries a plain, non-automatic knife that is clearly a tool and packed away is the lowest-risk choice. Automatic (switchblade), gravity and butterfly knives are banned or restricted in many places, so do not travel with them. See the travel section for trains, coaches and borders.

Status: October 2026. Laws change and differ by country and state; this is general information, not legal advice. Check the current official rules, and see our knife law guide for the full picture.

How to use a pocket knife safely

Most folding knife injuries happen at two moments: when the blade closes and when the knife is pushed against something it should not be. Both are easy to avoid with a fixed routine. The routine is the same for every folder and works for a multitool blade too.

Passing a folding knife

The safest way to give someone a folder is closed, with the lock off. If it has a fixed blade, hand it over handle first. Say "Got it?" and let go only after the answer. Or put the knife down and let the other person pick it up.

Multitool at camp: what the tools can and cannot do

A multitool is a bundle of small tools. The question is not whether it has a saw but what the saw can really do. The sequence below shows four jobs where a multitool earns its place, and the table that follows gives honest limits.

For repairs a multitool fits neatly in the repair kit next to tape and cord. A minimal budget kit can skip it, as the budget kit explains, because a knife, a saw and cord cover most jobs. The rule is simple: take a multitool when you carry gear that can break, such as a stove, a tent or a bike, and leave it at home when a knife and a saw already do the work. At a base camp one multitool in the repair box can serve everyone.

Caring for a pocket knife: pivot, oil and rust

A folder collects dirt where it moves. Pocket lint, sand, resin and food sit in the pivot and the blade slot, and they can stop the lock from seating fully. The full routine is in our care guide for folders; here is the short version, consistent with it.

1. Brush it out. Open the blade fully, lay the knife down with the edge pointing away from you and brush the pivot and slot with an old toothbrush. A wooden toothpick reaches the corners.
2. Wash and dry. Rinse in warm water with a drop of washing-up liquid, then rinse clean and shake out the water. Leave the knife open on a cloth until the inside is completely dry; warm air from a distance helps.
3. One drop of oil. Put a single drop on the pivot, open and close the blade a few times with care, and wipe off what comes out. Use a food-safe oil if the knife cuts food. Check that the lock engages fully.

Do not take a folder apart unless the maker says so. Multitools are cleaned the same way, one tool at a time.

Rust and what it means

Wet seasons and winter trips (camping through the seasons) are when pivots rust and lint freezes, so clean more often then.

Stainless steel rusts less, not never. Salt, sweat and food acids can leave small pits, especially in the pivot. Light surface rust comes off with a cloth and a drop of oil. Pitting on the flat of a blade is cosmetic; pits in the edge need the edge ground back, see removing rust. Rust deep in the pivot, or a blade that has lost visible thickness, is a reason to retire the knife from hard work. Store knives dry, and not in a sealed leather sheath or a damp pocket for days.

Pocket knives for children

Whittling is one of the best skills for a child, and a knife is a tool, not a toy. The step-by-step approach is in bushcraft with kids; this section adds what is special about folding knives.

• Start without a blade. A swivel peeler on a green stick teaches the movements; then whittling projects.
• Rounded tip. A kids' blade with a rounded tip and a finger guard hurts less when it slips.
• Folding choices differ. A non-locking folder is the simplest to carry legally, but the blade can close on fingers during a push cut, so it is for pulling cuts under close supervision. The kids guide prefers a short fixed blade or a locking folder, and for young children a short fixed blade with a rounded tip.
• Supervision. An adult is within reach, sets the safety circle and keeps the knife until the child needs it.
• Law and age. Carrying rules apply regardless of age. In the UK most knives may not be sold to people under 18; in Germany the carry rules of § 42a and the location bans apply regardless of age. The adult carries the knife packed on the journey and hands it over at the carving spot.

Carrying a pocket knife: clip, pouch or in the pack?

Where you keep the knife changes how fast you reach it and how the law sees it.

On the trail a clip or a belt pouch is convenient. Before you enter a town, a train, a market or an event, move the knife into the pack, deep and closed, see how to transport a knife. A knife that is not in your hand goes back to the same place every time.

Status: October 2026. Laws change and differ by country and state; this is general information, not legal advice. Check the current official rules, and see our knife law guide for the full picture.

Buying a pocket knife: new or second-hand?

A folding knife does not need to be new or expensive. Decide the class first: budget (a plain, honest tool), mid-range (better steel, a smoother lock and a better finish) or premium (the best steel and fit). A mid-range knife is the sweet spot for most campers.

Second-hand is an excellent way to buy, in line with the thinking in the budget kit. Check these points in person or ask for clear photos:

• Lock: opens with a firm click, no wobble, no play, and holds when you press the spine lightly.
• Pivot: smooth, with no grit, no side-to-side play and no rust at the joint.
• Blade: straight, with an intact edge and tip, centred when closed. A reground edge is fine; a chipped tip is not.
• Legal status: make sure it is not a banned type such as an automatic or gravity knife, and that you can legally own and carry it where you live.

Which one for me? A quick decision

Answer the questions in order and stop at the first line that fits.

Pocket knife problems and how to fix them