How Get Key Made for Old Mortice Door Lock？

Losing a key is always frustrating, but it can feel especially daunting when it's for an old mortice door lock. These classic locks, known for their durability and distinctive skeleton keys, often seem irreplaceable. If you've found yourself keyless, you might be wondering if your only option is to replace the entire lock mechanism.

Fortunately, that's rarely the case. Getting a new key made for an old mortice lock is entirely possible, and it doesn't always require a complete overhaul. This guide will walk you through the various methods for getting a new key, from simple duplication to having one custom-made by a professional locksmith. By the end, you'll understand your options and be ready to unlock your door with confidence.

What is a Mortice Door Lock?

A mortice door lock is a type of lock that is fitted into a pocket—or mortice—cut into the edge of a door. Unlike a more modern cylinder lock, the entire lock mechanism is hidden within the door itself, making it a secure and aesthetically pleasing option.

These locks are often found in older homes and are operated by a "skeleton key" or "bit key." The key has a long shaft and a specific bit at the end that engages a series of levers inside the lock. The number of levers (typically 2, 3, or 5) determines the lock's security level. A 5-lever mortice lock is considered highly secure and is often recommended for external doors.

Because of their robust internal mechanism, mortice locks are known for their longevity. It's not uncommon to find locks that are decades, or even a century, old and still functioning perfectly.

Step-by-Step Guide to Getting a Key Made

If you need a new key for your mortice door lock, there are a few paths you can take. The right one for you will depend on whether you have an existing key to copy and the complexity of the lock itself.

Option 1: You Have an Existing Key

If you still have one working key, the process is straightforward. This is the simplest and most affordable scenario.

1. Find a Reputable Locksmith: The first step is to locate a traditional locksmith shop. While hardware store kiosks can duplicate modern keys, they often lack the equipment and blank keys needed for old mortice locks. Look for established locksmiths who advertise services like "key cutting" and "antique lock repair."

2. Bring Your Key for Duplication: Take your original key to the locksmith. They will use a key-cutting machine to create a copy from a matching "key blank." A skilled locksmith can often identify the correct blank just by looking at your key.

3. Test the New Key: Before leaving the shop, compare the new key to the original. Ensure the cuts and shape are identical. Once you get home, test the new key in the lock immediately. Check that it turns smoothly from both sides of the door and can lock and unlock without sticking.

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Option 2: You Don't Have an Existing Key

Losing the only key to your mortice lock is more challenging, but it's a common problem that locksmiths are well-equipped to handle. You have three main routes to consider.

Method A: Provide the Lock's Brand and Model Number

Some mortice locks have identifying marks, such as a brand name (like Chubb, Yale, or Union) or a model number, stamped on the faceplate. This is the thin metal plate you see on the edge of the door.

1. Inspect the Faceplate: Open the door and carefully examine the faceplate for any engravings. You might need a flashlight to see it clearly.

2. Take a Photo: Snap a clear picture of the faceplate and the keyhole itself.

3. Contact a Locksmith: Call a locksmith and provide them with the brand, model number, and photos. With this information, they may be able to identify the correct key blank and create a key from code, without needing to see the lock itself. This is often called "cutting a key to code."

Method B: Take the Lock to a Locksmith

If there are no identifying marks, or if the locksmith can't make a key from code, the next best option is to remove the lock from the door and take it to their workshop.

1. Remove the Lock: Unscrew the door handles and the screws on the faceplate. Carefully slide the lock body out of the mortice pocket in the door. It might be a snug fit, so be gentle.

2. Take it to the Workshop: Bring the entire lock mechanism to a locksmith. With the lock in hand, they can disassemble it to determine the lever configuration and hand-cut a key to fit. This process is known as "impressioning" or hand-fitting and requires significant skill.

3. Reinstall and Test: Once you have your new key, simply reinstall the lock in the door and test it thoroughly.

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Method C: Call a Mobile Locksmith

If you are unable to remove the lock yourself or prefer a more convenient solution, a mobile locksmith can come to your home.

1. Schedule a Visit: Contact a local mobile locksmith and explain your situation. Let them know you need a key made for an old mortice lock and you don't have a spare.

2. On-Site Service: The locksmith will come to you and will likely use the impressioning technique on-site. They insert a blank key into the lock and turn it, creating tiny marks on the blank. They then file down these marks and repeat the process until the key fits the lock perfectly.

3. Immediate Results: This method has the advantage of ensuring the new key works before the locksmith leaves. While often the most expensive option due to call-out fees, it is also the most hassle-free.

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What If a New Key Can't Be Made?

In very rare instances, a key cannot be made. This might happen if the lock is extremely old, rare, or has been damaged internally. If a locksmith determines that creating a new key isn't feasible, your next step is to replace the lock.

You can often find a modern mortice lock that fits the existing pocket in your door, which minimizes the need for additional carpentry. A locksmith can help you find a suitable replacement and install it for you.

Your Next Steps

Losing a key for an old mortice door lock doesn't have to be a major problem. With the help of a skilled locksmith, you can get a new key made and keep your charming, original hardware intact. Start by assessing your situation—whether you have a key to copy or not—and then reach out to a professional who can guide you to the best solution. Taking this step will not only solve your immediate problem but also preserve a piece of your home's history.

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