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can you make a copy of a broken house key

The Quick Answer to Your Broken Key Problem

Can you make a copy of a broken house key? Yes, in most cases a professional key cutting service can duplicate a broken house key. However, success depends on a few key factors:

  • Clean break with all pieces: If your key snapped cleanly and you have both halves, copying is usually straightforward.
  • Type of key: Standard house keys are easier to copy than high-security or restricted keys.
  • All cuts must be intact: The teeth pattern needs to be complete and visible on the broken pieces.
  • Professional equipment required: This isn’t a DIY job; it requires a key cutting machine and expertise.

When copying won’t work: If pieces are missing, the key is severely worn, or it’s broken in multiple places, you may need to replace the lock instead.

Broken keys are a common frustration. Whether your key snapped in the lock or in your hand, you’re likely hoping to avoid replacing the entire lock. The good news is that in many cases, you can. The reliability of the copy, however, depends on the condition of your broken key and the type of lock you have.

The helpful team at Lowcountry Ace has extensive experience helping Charleston-area homeowners with key cutting and duplication, including tricky situations where you need to make a copy of a broken house key. We understand the frustration and can guide you to a quick, affordable solution.

First, Assess the Damage: What to Look For

Before you can determine if you can make a copy of a broken house key, you need to assess the damage. Keys don’t break without reason. The most common culprit is metal fatigue, where the soft metals in keys (like brass) weaken from the stress of repeated twisting. Improper use, like using a key to open a package, also creates weak points that can lead to a break.

Look for these warning signs that a key is failing:

  • Hairline cracks: Small fractures near the cuts or base are a major red flag.
  • Worn teeth: If the cuts look rounded or flattened, the key can stick in the lock, requiring more force.
  • Bending or warping: A key should be rigid. Any flexibility or bending indicates serious stress.
  • Sticking in the lock: If you frequently have to force the key, you’re straining the metal.

Catching these signs early allows you to get a duplicate made before it breaks, which is always the easier option.

Close-up of a cracked key showing a small fracture near the cuts, next to another close-up of a key with noticeably worn-down and rounded teeth - can you make a copy of a broken house key

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What You’ll Need to Make a Copy

If your key has already broken, the single most important thing is having both pieces of the key. A key cutting service needs the complete tooth pattern (the “bitting”) to create an accurate duplicate. If the key snapped cleanly and you have both halves, a professional can align them as a template. Even a small missing fragment can make the job impossible, as every cut must be visible.

What if a piece is stuck in the lock? Don’t try to force it out with another tool, as this can damage the lock. A professional locksmith has broken key extractors to remove the piece safely. Once it’s out, bring both pieces to the helpful team at Lowcountry Ace.

Factors That Affect Success

Whether you can make a copy of a broken house key also depends on these factors:

  • Key Type: Standard house keys are the easiest to duplicate when broken. High-security keys have complex cuts and require specialized equipment and expertise.
  • “Do Not Duplicate” vs. Restricted Keys: Keys stamped “Do Not Duplicate” can often be copied by a professional locksmith if you prove ownership. Restricted keys are patent-protected and can only be duplicated by authorized dealers.
  • Age and Wear: An older key might have a clean break, but if the teeth are worn down, a copy of that worn key won’t work well. Copies are always best made from the original key, not copies of copies.
  • Material: Most keys are brass or nickel-silver. Softer metals wear faster, making an accurate copy more difficult.

When you bring your broken key to Lowcountry Ace, we’ll assess these factors and give you an honest opinion on your options.

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So, Can You Make a Copy of a Broken House Key?

Yes, you can make a copy of a broken house key more often than you might think. A professional key cutting service with the right equipment and experience can successfully duplicate most broken keys. While automated kiosks can’t handle them, trained technicians at places like Lowcountry Ace work with broken keys regularly.

Success hinges on the condition of the broken pieces. If the key broke in a way that preserved the full pattern of cuts and grooves, you’re in good shape. We need to be able to “read” the original key’s pattern to create a new one.

Key duplication machine cutting a new key from two broken pieces held together by a jig - can you make a copy of a broken house key

When You Can Make a Copy of a Broken House Key

Copying a broken key is most reliable under these ideal conditions:

  • A Clean Snap: The key broke neatly across its blade, allowing the two pieces to fit back together perfectly.
  • Intact Cuts: The break occurred between the cuts, not through them, leaving the entire tooth pattern visible and complete.
  • Perfect Alignment: The two halves meet flush without any gaps, twisting, or warping.
  • Standard Key Type: Your typical house key for a deadbolt or doorknob is the easiest candidate for duplication.

If your broken key checks these boxes—you have both pieces, they mate together smoothly, and every tooth is visible—there’s an excellent chance the helpful team at Lowcountry Ace can create a functional duplicate for you.

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When It’s Difficult to Make a Copy of a Broken House Key

Copying becomes more complicated in these situations:

  • Multiple Breaks: If the key shattered into three or more pieces, aligning them perfectly is nearly impossible, leading to an inaccurate copy.
  • Bent or Warped Pieces: Twisted or bent metal won’t sit flat in a key cutting machine, preventing a clean reproduction.
  • Missing Fragments: Even a tiny missing chip from the cutting edge means we’re guessing at the pattern, and a key made from a guess is unlikely to work.
  • Significant Wear: If the key’s teeth were already worn down and rounded before it broke, a copy will just reproduce those same flaws, resulting in an equally unreliable new key.
  • High-Security Keys: Without a key code, a badly damaged high-security or restricted key is almost impossible to duplicate accurately due to its complexity.

In these challenging scenarios, we’ll be upfront about your chances of success. Sometimes, the best solution is to rekey or replace the lock entirely.

Tips and advice on broken keys from our team

The Key Copying Process Explained

When you bring a broken key to a professional service like Lowcountry Ace, we use a precise process that combines technology and skill. Here’s how we make a copy of a broken house key.

For a general overview of how this works, see key duplication.

Professional locksmith carefully aligning two broken key pieces in the vise of a key cutting machine - can you make a copy of a broken house key

Standard Duplication

For a standard key with a clean break, the process begins with alignment. Our technicians carefully position the broken pieces to recreate the original key’s exact profile. Even a fractional misalignment can cause the new key to fail.

Once aligned, the pieces are securely clamped into a key duplicator. A tracer on the machine glides along the profile of your broken key. On the other side, a cutting wheel carves the exact same pattern onto a blank key. The machine must be properly calibrated for the specific key type to ensure the depth and spacing of the cuts are perfect.

After cutting, the new key is deburred to remove rough edges. A well-made copy from a clean break can be just as reliable as the original.

Cutting a Key by Code

If the broken key is too damaged or worn to use as a template, another option is cutting a key by code. This method uses a numerical code corresponding to your key’s specific pattern.

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This key code may have been provided by the manufacturer on a metal tag or in the lock’s packaging. Sometimes it’s stamped on the lock cylinder itself. If you can’t find the code, a skilled locksmith can sometimes decode the lock by analyzing its internal pins.

With the code, a specialized code cutting machine is programmed to cut a new key to exact factory specifications. This method often produces a more accurate key than a direct copy, as it isn’t affected by the original key’s wear and tear.

The helpful team at Lowcountry Ace can help with standard duplication and advise you on whether cutting by code is necessary for keys that are too damaged to copy directly.

When to Replace the Lock Instead of Copying the Key

Sometimes, copying a broken key is a temporary fix for a larger problem. There are situations where replacing the lock is a better choice for your home’s long-term security and reliability.

If there’s any doubt about who might have a piece of your old key, or if the lock itself is failing, it might be time for a fresh start. At Lowcountry Ace, we’ll give you straight advice. Sometimes a small investment in a new lock saves future headaches and money.

Here’s a quick comparison:

Feature Copying a Broken Key Replacing the Entire Lock
Cost Usually $5-30 depending on key complexity Higher upfront cost (lock + installation)
Time Quick—often done in minutes Takes longer but still doable same day
Security Keeps your current security level Fresh start with improved security features
Reliability Depends on the condition of your original key Brand new mechanism means smooth operation
Peace of Mind Works if you have all the pieces No worries about lost fragments or worn-out locks

If a Piece of the Key is Lost

If you’ve lost any fragment of your broken key, we strongly recommend replacing or re-keying the lock. That missing piece is a security risk. You don’t know who might find it or what they could do with it. For peace of mind, it’s best to eliminate the risk.

Re-keying is a cost-effective solution where a locksmith changes the internal pins of your existing lock, rendering the old key (and any copies) useless. You get a new key without replacing the hardware.

A full lock replacement is a good option if your lock is old or you want to upgrade your security.

If the Lock Itself is Old or Damaged

A broken key can be a symptom of a failing lock. If you’ve been jiggling the key, forcing it to turn, or dealing with a sticky mechanism, the lock is likely the real problem. All that struggling puts stress on your keys, making them more likely to break.

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Continuing to copy keys for a bad lock is a waste of money. A new lock provides a fresh start with modern security features and smooth operation. You’ll also get a set of pristine, factory-original keys, which are ideal for making future copies.

The helpful team at Lowcountry Ace on Folly Road can help you choose a quality lock that fits your door and budget, giving you priceless peace of mind.

Frequently Asked Questions about Broken Keys

Here are straight answers to the most common questions we hear from homeowners in James Island, Folly Beach, and the greater Charleston area.

How much does it cost to copy a broken house key?

The cost to make a copy of a broken house key varies. For a standard house key with a clean break, the price is slightly more than a regular copy due to the extra labor of aligning the pieces, but it’s still affordable. For specialty or high-security keys, the price is higher due to more expensive blanks and the complex process, especially if it needs to be cut by code. Copying a broken key is almost always more cost-effective than a full lock replacement, and we’ll always provide an upfront quote.

What should I do if part of the key is stuck in the lock?

First, do not force it. Trying to pry the piece out can damage the lock. Instead, try these steps:

  1. Apply a spray lubricant into the keyway to loosen the piece.
  2. If a part of the key is sticking out, use needle-nose pliers to grip it and pull straight out.
  3. For a flush break, a broken key extractor tool has small hooks that can slide in and grab the key’s cuts.

When to call a professional: If you can’t get it out or are worried about causing damage, it’s time to call a pro. A locksmith can extract the piece without harming the lock and can often make you a new key on the spot.

Will a copy of a broken key be reliable?

It depends. A copy made from cleanly broken, well-aligned pieces by an experienced technician can be very reliable. However, if your original key was already heavily worn, the copy will have the same flaws. An inaccurate key can stick, be hard to turn, and even damage your lock’s internal mechanism over time.

For this reason, the most reliable duplicates are always made from a pristine, original key. When you bring your broken key to Lowcountry Ace, we’ll assess its condition and give you an honest opinion on how reliable a copy is likely to be. We’ll let you know if another option, like cutting by code, would be a better choice for your security and satisfaction.

Get Back Inside Without the Hassle

A broken house key is a frustrating but solvable problem. For homeowners in James Island, Folly Beach, and the Charleston area, the path forward is clear.

Start by assessing the break. A clean snap with all pieces is a good sign for a straightforward copy. If pieces are missing, the key is worn, or it’s a high-security type, you may need to consider cutting a key by code or replacing the lock.

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In any case, seeking professional help is the smartest move. The right equipment and experience are crucial for creating a key that works reliably without damaging your lock. A professional can quickly tell you if you can make a copy of a broken house key or if another solution is better.

That’s where the helpful team at Lowcountry Ace comes in. We help Charleston-area homeowners get back inside quickly and affordably. We’re not just about making a sale; we’re about finding the right solution for you.

Find a key cutter near you

Stop by Lowcountry Ace at the Riverland Market on Folly Road. We’re ready to help with key cutting and all your home improvement needs, from paint and tools to lawn and garden supplies. No hassle, just solutions.

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Lowcountry Links

Carrie Hegenderfer profile pictureCarrie Hegenderfer
15:07 10 Apr 25
This Ace Hardware store is not really close to my house but I came here after having a poor experience at the Johns Island Ace. I was greeted by friendly employees upon entry and throughout my experience, asked if I needed help, the store atmosphere was cheerful and in organized condition, and they had absolutely no problem exchanging an item purchased at another Ace Hardware for a few other items from their store. I even spent extra money in store. I will drive the extra mileage to come to this store moving forward.
Response from the owner 16:10 10 Apr 25
Thank you so much for sharing your experience, Carrie! We’re delighted to hear that our friendly staff and cheerful atmosphere made your visit worthwhile, and that we could help with your item exchange. We’re here to serve the Charleston community with quality and dedication, and we look forward to welcoming you back to Lowcountry Ace Hardware for your future needs!
Anita Praytor profile pictureAnita Praytor
14:14 26 Mar 25
Visited Sunday afternoon 3/23/25. Always a pleasure to browse and shop at this Ace store. A man, Steve, around 4-430 totally helped me in the name of Customer Service. He cut chain for me that isn't sold separately for a hanging basket. Bigger, he followed me to checkout with a bag of soil weighing a ton. Steve insisted I bring my SUV parked in far-away Publix Land so he could lift it out of cart into my SUV. Wouldn't budge on who was moving the soil into the SUV! Thank you again, Steve! Anita
Response from the owner 15:45 14 Apr 25
Thank you, Anita, for sharing your delightful experience with us! We’re so glad to hear that Steve went above and beyond to assist you with cutting chain and helping with your bag of soil. At Lowcountry Ace Hardware, our team is always dedicated to making your visit as pleasant as possible. If you ever need further assistance, don’t hesitate to come back and see us!
Stephen Houmard profile pictureStephen Houmard
19:45 23 Jan 25
GREAT SERVICE! The older guys know everything!
Good Bye Lowes!
Response from the owner 20:00 23 Jan 25
Thank you so much for your enthusiastic review, Stephen! We're delighted to hear you received great service and that our experienced team could assist you. We're grateful for the opportunity to be your go-to hardware store in Charleston, and we look forward to helping you with any future projects!
Billy Erickson profile pictureBilly Erickson
22:34 26 Nov 24
All the employees I encountered were so helpful and friendly. The store is very clean.
Response from the owner 15:45 14 Apr 25
Thank you so much for your positive feedback, Billy! We’re so glad to hear that our helpful and friendly team, along with our clean store environment, made your visit enjoyable. Thank you for choosing Lowcountry Ace Hardware, and we look forward to assisting you with any of your future needs!
Lauren Carter profile pictureLauren Carter
18:39 11 Jul 24
Thad is the man— he saw our look of confusion in the paint aisle, immediately offered help, and even mixed the paint for us. So impressed by his customer service, we’ll definitely be back in the future!
Response from the owner 17:00 13 Aug 24
Thank you so much for the kind words, Lauren! We're thrilled to hear that Thad could assist you and make your experience enjoyable. We look forward to serving you again soon!
Brad Flaig profile pictureBrad Flaig
16:27 06 Jul 24
We love Ace! So helpful to not have to compete against the beach traffic or the Lowe’s traffic. This store is brand new, everyone is so helpful and the location is convenient
Photo from customer reviewPhoto from customer review
Response from the owner 20:00 09 Jul 24
Thanks for the wonderful review, Brad! We're thrilled to hear that you find our location convenient and enjoy our helpful staff. We look forward to serving you again!
Restora profile pictureRestora
16:11 08 Apr 24
Lovely! Has everything I always need and great customer service.
Response from the owner 15:10 28 May 24
Thank you so much for your kind words, Restora! We're delighted to hear you found everything you needed and enjoyed our customer service. Looking forward to helping you again!
Warren Weber profile pictureWarren Weber
12:20 01 Apr 24
Nice selection of merchandise, people are friendly, reasonable prices
Response from the owner 15:10 28 May 24
Thank you for the great review, Warren! We're thrilled to hear you enjoyed our selection, friendly staff, and reasonable prices. Looking forward to seeing you again at Lowcountry Ace Hardware!
Kat T profile pictureKat T
16:43 29 Mar 24
Frank approached is within seconds of entering into the plumbing aisle, he carried us throughout the store, getting the correct fittings to put us back in business. Thanks Frank!.
Response from the owner 15:10 28 May 24
Thank you for the awesome review, Kat! We’re thrilled to hear that Frank was able to assist you so effectively and get everything you needed. We appreciate your kind words!
Rhonda Jones profile pictureRhonda Jones
21:27 27 Mar 24
Steve Thad ,and Renee the customer service person were awesome and assisted me so much with my DIY project.If you want great advice and truly kind helpful staff please give them a chance to be of assistance. All the staff there were warm,friendly, and helpful. Thanks so much I appreciate ? yall.
Joshua Johnson profile pictureJoshua Johnson
12:48 14 Oct 23
Manager wouldn’t return money to my credit card despite having the same card and rewards number (no receipt), so gift card only. I was told “I’d have to look it up in the computer, it’s tedious”

After talking to other customers, I learned it’s routine to return with same credit card or rewards account.
C D profile pictureC D
20:58 30 Mar 23
This location is the best. They are attentive and professional and always aim to please. We ordered a grill from them which was delivered quickly. There was a slight defect and they immediately rectified the situation and went above and beyond on multiple aspects of the transaction. Everyone from the GM to the delivery guys and everyone in between are always so great. We will continue to give them our business ?!
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