How to place nuts and cams that hold: judging the rock, the right direction of pull, testing and extending placements — removable protection basics.
## Introduction The honest answer to "How do I place nuts and cams?": so they sit in the expected direction of pull in solid rock — and so you test every single placement before you trust it. A badly placed piece is worse than none, because it fakes security.
Quick tool tour: a nut is a passive metal wedge you jam into a downward-narrowing crack — it holds because the rock squeezes it downward in a fall. A cam is a spring-loaded device with moving lobes that self-tensions in parallel cracks. Both are great — and both are only as good as your placement.
Why this is lifesaving: in clean-protected climbing, anchor and protection failure is behind about 5 % of deaths. That sounds small but is almost always fatal — and the cause is rarely gear breakage, but a placement that blows out or pulls in a fall.
So placing removable protection demands a different standard than clipping bolts: here you are the engineer. That's the heart of alpine self-reliance — and a skill you build only through many deliberate repetitions, ideally first at ground level on boulders.
## What You Need - A set of nuts in various sizes, on wire or cord. - Four to six cams in the common crack widths. - A nut tool to free stuck nuts later. - Enough quickdraws and long slings (alpine draws) for extending. - Solid practice ground and ideally an experienced mentor who checks your placements.
## Step by Step ### 1. Judge the rock Before you place anything: is the rock solid? Tap off loose flakes, avoid brittle, sandy or iced-up zones. The best placement in crumbly rock holds nothing (practice). Good rock is the basic prerequisite — everything else comes after.
### 2. Choose the right piece Crack narrowing downward → a nut fits. Parallel crack → you need a cam. Pick the size that fills the space snugly — a nut with plenty of metal-to-rock contact, a cam in the middle of its range, neither fully closed nor fully open (practice).
### 3. Place cleanly and set in the direction of pull Set the piece so a fall pulls it into its holding direction — for a nut, downward into the constriction. A cam needs its lobes loaded evenly and the stem roughly in the expected fall direction (practice).
### 4. Test every placement Pull and jerk hard in the direction of pull. If it wobbles, breaks rock or walks — out with it, place again. This test isn't optional; it's the difference between protection and illusion.
### 5. Extend against rope drag and walking Clip a long sling so the rope doesn't tug the piece back and forth as you climb on. Nuts especially can lift out on their own from rope drag (practice) — the extension keeps them in place.
## Common Mistakes - Bad rock: a perfect placement in crumbly stone. Fix: check the rock first, then place (practice). - Wrong direction of pull: the piece only holds downward, the fall pulls sideways. Fix: think about the real fall direction (practice). - Not tested: blind trust. Fix: jerk every placement, re-place if in doubt. - Not extended: rope drag lifts the nut. Fix: clip a long sling (practice).
## Safety Notes Removable protection is the supreme discipline of self-reliance — and the area where overconfidence is most expensive. Protection failure is behind about 5 % of deaths in clean-protected climbing, and accident research shows serious events are almost always human error, not gear breakage. Meaning: the placement decides, not the device.
So never head straight to your limit on an unbolted face with freshly learned removable protection. The path leads through clean ground practice, controlled first leads in easy, bombproof terrain and — wherever possible — a mentor who checks your placements. Finger strength doesn't make you safe; good placements do.
## Pro Tip Build yourself a placement exam at ground level: set ten nuts and cams in a practice crack, have an experienced climber rate each one, then pull them out with full force (with a backup). You'll be surprised how many "good-looking" placements give way.
This exact feedback — seeing what holds and what blows — builds your feel faster than any theory. Test a hundred placements on the ground and you'll set your first on the wall with a steady hand. Train Smart. Play Hard.
## FAQ ### What's the difference between nuts and cams? A nut is a passive metal wedge for downward-narrowing cracks — it holds by jamming. A cam is a spring-loaded device with moving lobes for parallel cracks — it tensions actively. Rule of thumb: constriction → nut, parallel crack → cam. A good rack has both in several sizes.
### How do I recognise a good placement? By three things: solid rock, plenty of contact area and the right direction of pull. The only reliable test is jerking hard in the expected fall direction — bombproof means good; walking or wobbling means place again (practice). Never rely on the visual impression alone.
### Can I learn to place nuts from a YouTube video? For basic understanding it helps, but the actual skill only comes from real placements and real feedback. Protection failure is almost always human error — which is exactly why supervised practice is needed. Take a course or an experienced mentor before you trust self-placed protection on the wall.
### How many pieces do I need to start? For first, easily protected routes a set of nuts plus four to six cams in common sizes is enough. More important than quantity is that you can place each size confidently. Expand the rack on purpose when specific sizes are missing on concrete routes — not just to stock up.
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