How to Pick a Common Cylinder Lock




About: I love hacking things about and improving the design (or just bending it to my will!) I'm a locksmith, and I make a lot of my own tools. Those won't be published here, though! My first instructable is ...

All in the name of fun, you understand!

Never, ever pick a lock you rely on, and never ever pick a lock that you don't have the right to. And never try to pick them, either! This is because burglary is a crime, and also morally wrong.

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Step 1: Find a Lock

Get yourself a secondhand lock, or a cheap padlock.

You want a Yale style keyway. Avoid anything off a car or other vehicle, since they are generally wafer locks. If you are in the UK, avoid getting a lever lock, you want either a rim cylinder, or a euro cylinder.

To start off, get the cheapest and loosest, most rubbish lock you can. This will make your first attempts far more likely to work.

Suitable ones are shown below (but some of these are very hard to pick!)

The first is a System Vario A from EVVA. You don't want to start on this, but it shows the shape of a euro style lock cylinder. I'll be showing you one of these today.

The second is an ERA rim cylinder, a good starter lock, in it's cheapest form.

The third is my training lock board, which is simply 3 32mm holes with the three locks fitted, then put in a clamp. You don't need an Instructable for that.
The top one is a Yale X5, the second is a standard Yale, and the third is some 6 pin restricted section.

The fourth picture is so you know what a euro cylinder looks like, side on.

Step 2: Unsuitable Locks

Not suitable are the following:

The first is an ERA Fortress. This is a lever lock. (Americans only use these on high end safes. Many British doors have these fitted.)

The second is a Master combo padlock. It doesn't have a keyhole. But I'm sure you worked that out.

Step 3: Tools: Tension

You will need two things to pick a lock, a tension tool, and a pick. Both are vital.

A tension tool is easy to make. Just bend a bit of wire that fits in the keyhole. Nothing too big, as you need to reach the pins, and you need a pick to get in there at the same time. Make it long enough that you can hold it, too. You might be holding it for hours trying to open your lock, so no sharp edges.

There are various designs, but this is probably the most common style.

Step 4: Tools: Pick

You also need the actual pick, hopefully a good enough one that you end up with something a little like the below.

The top one is a jiggler, the next is a hook, then a King pick, then a snake, then a rough rake.

These were made from thin mild steel. Hacksaw blades are good for stock, other people use wiper blades, I used feeler gauges for these. Or just go with a couple of paperclips.

Step 5: Or for the Really Lazy...

There's an Instructable on making them already, from paperclips. And this one:

Step 6: Techie Bit About How a Lock Works

Before you get too worried, this step is optional.

To pick a cylinder lock, you have to lift all the pins to the shearline at the same time. The key is designed to do this for you all at once, and to turn the plug (the bit you put the key in) at the same time. We don't have a key (well, we probably do, but we are learning lockpicking here, right? So pretend already!) so we have to move the bits against the springs one by one.

I'm too lazy to do a proper picture, so I'm going to do ASCII art.
Actually, that's too much like hard work, so here's a screen capture or four from a CAD file I did a few years ago...


A. hull
B. plug
C. keyway
C'. bottom of keyway
C. top of keyway
D. bottom pin
F. driver pin
F'. driver pin located within pin (on pin-in-pin systems)
FK. false key
H. spring
J. spring retention screw
L. key
P. pick
S. set pin (set to the shearline)

Note that the tension tool is not shown for clarity, and the first picture is the lock from the front. Go through them in order, and it should be fairly clear.

Step 7: Getting Started

Put your tension wrench in the lock. Some people put it at the top of the keyway, where the pins sit, but mostly they go at the bottom edge.

Apply a little tension. If the plug spins around, you opened the lock! It probably won't, though, not yet.

Make sure the wrench won't slip easily. You don't need much pressure on most locks. With padlocks you have to get past the shackle spring, and that makes them far more difficult, even if they aren't filled full of mushroom pins.

Step 8: Actual Picking

There are two main ways to pick a lock. Both require tension from the tension tool, and a pick to move one or more pins to the shearline. The shearline is the place where the pins (normally two) sit to stop the plug in the middle of the lock from turning, and these pins have a tiny gap in them where they meet. Your goal is to line them all up. Fortunately for us, on a cheap lock this is easy, because the pin reaching the shearline correctly will cause noticable movement in the plug when the pin is lined up.

SPP, or Single Pin Picking, is a bit advanced in practise, but the theory is very simple.

Take a hook, apply a little tension, then gently push each pin with the hook. Find the pin that is binding the most, and push it down. When it reaches the shearline, let it go. If it was the right one, the pin will slide back, and catch at the shearline. Now go through again, and find the next binding pin. After you push all the binding pins down to the shearline, the lock will open. In practise, this is quite tricky, because you have to control your tension enough to stop the top pins coming all the way back, or not too much that they stick up too high. The only way to find this technique is to practise!

Raking is roughly the same, except you simply jiggle all the pins really quickly, and hope your tension control is good enough for the pins to fall and stick at the shearline. Once mastered, most cheap locks can be opened in a few minutes or less.

Step 9: Open!

By Grabthar's Hammer! You did it! The plug turned!

Now do it again. Think about what you did, and do it again.

Tips: If it isn't doing anything, and the pins won't move, you are using far too much tension. Ease off a bit. If nothing stays in place (and you can hear them coming back when you drop the tension right off) then you aren't using enough tension.

Now change locks.

You will find that some locks are easy, and others are so far beyond your skill level they might as well be welded. However, with practise (lots of practise) you will find that some of these locks that were impossible become easier, and the ones that used to take you 20 minutes wil take 2 minutes. Eventually, some locks will open in a few seconds.

When that lock is your front door, call a locksmith and get it upgraded!

To learn (much) more about locks and lockpicking, visit and say hi!

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    66 Discussions


    Reply 12 years ago on Introduction

    Not very cheap, and generally too thick. Far better is either a set of shims or feeler gauges, which come in a range of thicknesses. The other option is either the wires off of street sweepers, or, my favourite, the stainless steel strips out of old windscreen wipers. I'll perhaps do a 'Make a pick' Instructable later on.


    Reply 12 years ago on Introduction

    They are ok, but I find that they are too brittle, even if you don't let them overheat when grinding them down. Best to go for big arcing curves with them, otherwise you might well end up trying to fish the end out one of your locks! I recommend going for the £1 shop packs of blades, as the good ones will be "bi-metallic" which means the teeth will be hard, but the rest will be really soft and not much use to you, as it will just deform. You want the cheap ones that shatter, as they will be rigid enough for a good pick. Snap the foot long blade into either two or three bits and grind the teeth off, for your blanks.

    Caleb Nehrbass_soapy_

    Reply 7 years ago on Introduction

    I made four with a hack saw blade. They work really well. When you are grinding them, you need to keep dipping them in a cup of water to fix overheating.


    Reply 11 years ago on Introduction

    I bought loads of hacksaw blades, and only use them for this. They're crap at sawing, all hte teeth shear off within the first few strokes.


    Reply 11 years ago on Introduction

    Yup! After a bit of instructable-following, i had a fairly good set of picks! (_)

    I picked a really small lock before, I guess it was 3 or a 4-pin lock, I just lifted the front-most pin and tada! I went "WTF! WEAK LOCK WHO MADE THIS THING?!?!" In case you're wondering what lock, it was the lock to a CAI (computer-aided instruction) unit that we needed to close, but then the key got lost so my friend left me to my lock-picking doom, but it didn't turn out to be my doom in the first place. By the way, would a tempered piece of wire (say, from a paper clip?) work? It's the closest I have to a shaped hacksaw blade. I seriously need it since the 2nd floor door to my bedroom is somehow always closed (yes, a cylinder lock). Now I know...


    9 years ago on Introduction

    This worked awesome! I was able to pick the very first two seargent and greenleaf padlocks that I tried, it was just like in the movies! But, when I tried to pick the one on the third shed the tension wrench thingy that I made broke and went inside the lock and when my dad got home he was mad as heck and started pacing back and forth (I think he keeps guns in there :-0). So to anybody thinking about trying this, unless you want to be grounded for two weeks with no computer and almost give your dad a heart attack DON'T use the windshield wiper blades to make the tension wrench thingy like I did. (I think they're allot cheaper in the US cuz when you bend em they don't flex they just stay bent). Anyway, this instructable taught me stuff I won't ever forget and I'm sure I'll use again someday. Even though it was my fault I give it 4 stars.


    9 years ago on Introduction

    I have what is probably a dumb question. when you say "Never, ever pick a lock you rely on" do you say this because it could break and ruin the lock, or does it just mean not to rely upon these as a substitute for keys? Thanks, Noahh.

    2 replies

    Reply 9 years ago on Introduction

    You can't ruin a lock by picking it. You can only mess a lock up if you manage to break the pick or if something gets stuck in the lock whilst picking.
    With "never pick a lock you rely on" is meant that you can't feel secure anymore if you manage to open your car or front door with a simple pick (and in less than 5 seconds, perhaps).


    10 years ago on Step 4

    can you post templates somewhere or tell me where you got templates so that I can know the dimensions of the lockpicks?  I am trying to make my first lockpick set, any other advice?


    10 years ago on Step 9

    Great Job on the Instructable! You taught me lockpicking with it! After some additional research about "binding pins" and the purchase of a lockpicking set, I already managed to pick a heavy german Abus lock several times! However, I found 5 Abus locks in our garage, they're the same, they all have just one same key. Anyway, I managed to open one in 20 minutes, then 30, and finally 2. But I can only open that one of them. With the other ones, there is the problem that just 3 of 5 pins are binding and can be fixated. I always get stuck with 2 pins, raise the tension, but still no binding. what to do in this case?