How to Know You Landed on the Right Number on the Master Lock by Listening

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Combination locks are used for a variety of purposes, from school and gym lockers to securing items within the home. If you lose the combination it can be very frustrating not to have access to your property. If yous don't desire to cut open the lock, in that location are other methods to endeavour. These steps can assistance you open a combination lock without a code, but should only be used on your own lock. Practice non open locks that practise non vest to you.

1. i

   Familiarize yourself with the lock. A lock has three main components. The shackle is the U-shaped piece which attaches information technology to an object. The dial is the portion with numbers that turns. The body is the rest of the lock. If yous concur the lock with the shackle on meridian and the punch facing you, typically the locking mechanism is on the left side of the shackle.

2. 2

   Practice pressure level. To find a lock combination you will demand to pull up gently on the shackle. Too much pressure level volition brand it impossible to plow the dial. Too little and the punch will spin freely. You lot should exert gentle pressure level. This may accept some do.

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3. three

   Find the first number. Pull up gently on the shackle and hold it in identify. Turn the dial clockwise listening carefully until you hear the lock click.

   • Start with a skilful deal of pressure and gently let up as you lot spin it around, until you run across resistance in only one identify.
   • If the dial catches every few numbers, you are pulling also hard. If it never catches at all, yous are not pulling enough. Information technology should catch in simply 1 place, making a click.
   • If the click happens when the dial is between two numbers, round upwardly to the higher number.
   • Add 5 to that number and write it down. This is the showtime number in the combination.^[ane]

4. four

   Set the commencement number of the combination equally your starting point. Information technology may exist helpful to spin the dial a few times earlier doing this to reset the lock.

5. 5

   Turn the dial counterclockwise to find the second number. Maintaining gentle pressure on the shackle, turn the dial slowly. Yous should go all the way around the mechanism once before reaching the second number.

   • The lock will bump and catch as you turn.
   • Eventually the lock hit a indicate where it will be very difficult to turn. This stopping point is the second number. Note it on the same piece of paper.^[ii]

6. 6

   Try combinations. One method of finding the third number is to but test every possible combination. Set your kickoff 2 numbers as if you were ready to unlock. Then turn the dial clockwise very slowly, testing each possible combination.

   • At this point there should exist only forty possible combinations.
   • You do not have to reset the first two numbers for each combination. Simply plow one number then tug. Repeat the procedure until the lock opens.

7. 7

   Test for the third number. A different method for finding the tertiary number is to test the catch. Spin the dial clockwise a few times to reset the lock and set information technology at 0. Utilise up force per unit area on the shackle and plow the punch clockwise.

   • The lock will take hold of several times, allowing for slight motility dorsum and forth betwixt two numbers.
   • Write downwardly the number in the middle. For example, if the lock catches betwixt 33 and 35, write down 34 on a dissever piece of paper. This is non necessarily the final number.
   • The lock will also catch partway between numbers. For example, the range might be between 27.five and 29.5. If the middle number is not a whole number, such as 28.5, practise not write information technology down. Lock combinations are always whole numbers.
   • Keep all the way effectually the dial, writing down all the whole numbers where information technology catches. You should have 4 or v numbers written down.
   • About of the numbers volition fit a pattern, for instance all catastrophe in five. The one number that does not fit the design is the final number in your combination.^{[3] [iv]}

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1. i

   Consider your lock. Recently made locks are designed to exist shim-proof by the manufacturers, although in some cases it is notwithstanding possible to pick them. This method will work better on older locks.

2. ii

   Place where the locking mechanism is. In gild to utilise a shim properly you need to be working with the identify where the shackle locks, as working on the swivel will not accomplish anything.

   • Usually the locking mechanism is on the left side if you are looking at the lock with the shackle on height and the dial facing you.

3. 3

   Cut an aluminum can. Yous tin can create a shim for yourself by cutting up a soda tin can.^[5] Employ scissors to cutting off the top of the tin can, downwardly the length and then to cut off the bottom.

   • Yous should exist left with a single slice of aluminum that was once the torso of the can and is now a broad strip of metal.

4. iv

   Cut a strip of metal. Turn the aluminum horizontally, then you are cutting the shorter side of the cloth. This piece will be used to make the shim.

   • Cutting a strip a little over one inch wide.
   • If any of the edges are ragged, trim them.^[6]

5. 5

   Make two curved incisions. Agree the small strip of aluminum horizontally and cut two curves from the bottom, somewhat resembling the letter U.

   • Center the U in the middle of your strip.
   • Do not cut all the way to the top.

6. 6

   Make two diagonal incisions. Cutting from the bottom of the metal around a quarter of an inch from the base of the U, cut diagonally upwards to intersect with the top of the U and remove the triangles of material.

   • The result should be a strip of metal that looks something like the letter M, with the centre of the G curved instead of pointed. This volition be the shim.

7. 7

   Fold the sides to make a handle. Turn the top of the metal downward an eighth of an inch or so. Then fold the sides upward around the meridian of the strip of metal.

   • Folding the sides allows you to have a handle on the shim that will not cut your paw with a sharp edge.

8. 8

   Gently fold the shim around the shackle of the lock. The U of the shim should confront down.

   • You will want to wrap the shim advisedly around the outside first and so it molds to the shape of the shaft.
   • When you have got the shape you want, turn the shim so the U is on the inner part of the shackle and your handle is on the exterior of it.
   • Think to practise this on the side of the shackle that has the locking mechanism.

9. nine

   Press the shackle up equally far as information technology will go and hold information technology in position with your finger. Using your other mitt, slowly piece of work the shim into the crack between the shackle and the lock itself.

   • It will take a few minutes and you should non rush or force information technology.
   • When you have worked it in as far every bit it volition become, finish.

10. 10

    Pop the lock. Pinch the shim with one hand. With the other manus, press the shackle downwardly then pull it upwards. The lock should open.^[seven]

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1. 1

   Locate the series number. If your lock has a number stamped on it, write it downwards. Some locks will not have a series number.

2. 2

   Bring the lock to a distributor or retailer of the make. Ask the distributor to contact the manufacturer on your behalf to validate your ownership of the lock and provide you with the combination.

   • If the lock is fastened to an object, for instance a box, retailers will likely not assist yous.
   • Be aware that the retailer may charge a fee for this service.^[8]

3. 3

   Submit a lost combination form directly to the manufacturers. Visit the manufacturer's website to observe out if they offer this service.

   • Due to security concerns, manufacturers will probable non provide the combination over the phone or via email.
   • Y'all may be required to furnish proof that you own the lock, such every bit a notarized document certifying your ownership.^[ix]

4. 4

   Consult the owner. If the lock belongs to a schoolhouse or business organization, the administrators may have a list of combinations based on series numbers. Write down the serial number to bring to the main function.

   • If the lock is attached to something, for case a locker, be prepared to furnish proof that you have a correct to access the holding within the locker.^[10]

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Add New Question

• Question

  How do I open a combination concatenation lock without the code?

  

  Creating a "shim", as explained above, volition let you to open the lock without working the lawmaking.

• Question

  Is there a way to open a combination lock that isn't the spin style? Mine has four split tiny dials (like a briefcase lock, but on a padlock). I ordered information technology on eBay and it came with no combination.

  

  Apply the pulling process above, just like picking locks you need tension to set pins, so just enough tension (which varies with each brand) and it's half the chore washed. The wheels aren't even so, minor imperfections are what you exploit. It might take a little fourth dimension and do.

• Question

  What if it locks on a number that when you add together 5 it goes over twoscore?

  

  Liam Jenner

  Community Answer

  Only take the number minus 40. If it locks on 39, then you add five, it would go to 44, which would be 4.

• Question

  Do all schools keep rails of the series numbers and the combinations on combination locks?

  

  Most of the time, yes. My schoolhouse provided us with a piece of paper with a combination on information technology. Some teachers should also have a key to open the lock. If you lose or forget your combination, y'all tin ask for the combination from someone with authority.

• Question

  Will the shim piece of work on an alpha numeric lockbox?

  

  Dan Powers

  Customs Answer

  It could, depending on the quality of the lock. Ball bearing locks cannot be shimmed, spring loaded ones can.

• Question

  Can I open a master lock speed dial, and set my own combination with any of these methods?

  

  You lot demand a master lock speed dial key to set a combination, and then the answer is no.

• Question

  I can't find the third number using your methods. Is there any other way?

  

  Usually, that ways you have one of the other numbers incorrect. You tin can use the long method of dialing the first 2 numbers in each time you tray a new third number. Quite often, when you are lifting the shackle, the dial volition shift slightly, this causes the whole process to reset.

• Question

  Can the shim exist used on key locks likewise?

  

  No. Shims tin only be used on locks with dials, such as school or gym locks.

• Question

  How can briefcase combination locks be opened?

  

  Briefcase combination locks can exist opened with bolt cutters or a hacksaw. Use circumspection though, to avert harming either yourself or the briefcase. Habiliment protective gloves, eye protection, and ear plugs.

• Question

  What practise I do if I lost my combination for my alphabetical main lock?

  

  They normally come with a cardinal. If not, then consult the owner of the lock and try the shackle method.

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Thanks for submitting a tip for review!

• Destroying or stealing the property of other people is a crime. Do not utilize any of these methods to tamper with a lock that is not yours, even for a prank.

• Some of these methods may not work on all locks.

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About This Article

Article Summary X

To open up combination locks without a code, start by pulling up on the dial and turning it clockwise until you hear the lock click. And so, check what number you're at, add v to that number, and write it down. Side by side, set the dial to that number and plow it counterclockwise until you lot hear it click again. Then, write down any number you're at. Finally, set the beginning 2 numbers of the combination and and so slowly turn the dial clockwise, testing each number as you go, until you detect the third number and unlock the lock. To learn how to open a combination lock using a shim, scroll downward!

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Source: https://www.wikihow.com/Open-Combination-Locks-Without-a-Code

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