How Key Duplication Works, What It Costs, and When to Call Us
47 years of hands-on Baltimore-area locksmith experience under Maryland Locksmith License #0010. Here is the operator’s take on key duplication.
Most key duplication problems start with a key that was copied from a copy. The second or third generation is where the teeth drift, the shoulder gets off, and the lock starts feeling sticky for no good reason. In Baltimore, I see that all the time on house keys, apartment keys, mailbox keys, and older Schlage and Yale hardware. A clean duplicate usually takes a few minutes, but the right answer depends on the blank, the machine, and the original key you bring in. Some keys are straightforward. Others need code cutting, a better blank, or a pro who knows when the original is too worn to trust. If you want key duplication that actually works the first time, start with the lock, not the copy. That saves you a return trip and a lot of aggravation.
What happens during key duplication?
A proper duplicate starts with the original key, not the story about where it came from. We inspect the cut depth, the shoulder, the bow, and whether the key is already bent or rounded off. If the original is worn, the machine will happily copy the wear too. That is how you end up with a key that works once, then acts up in the deadbolt or the knob the next morning.
For a standard house key, the process is usually quick. We choose the right blank, clamp the original, trace the cuts, and then deburr the new key so it slides cleanly. With a good blank and a clean original, you can usually get a working duplicate in a few minutes. On the shop side, I still check the edge by hand before I hand it back. The machine cuts metal. It does not know what a sticky mortise pocket feels like.
Most folks don’t realize the lock matters too. If the cylinder has worn pin chambers, even a perfect copy can feel rough. That is why we ask what the key is for: front door, side entry, mailbox, or a padlock. The use case changes the answer.
If you want the hub page later, the overview is on our key duplication hub.
How much does key duplication usually cost in Baltimore?
For a plain house key, key duplication is usually inexpensive. Around Baltimore, you will often see basic copies in the roughly $3 to $10 range per key, depending on the blank and where you buy it. If the key is a restricted blank, a high-security key, or something tied to a Medeco or Schlage system, the price can move into the $10 to $30 range or higher. That is normal. The blank drives a lot of it.
If a key has to be cut by code, or if we need to make a new key from a lock because the original is too worn, the cost changes again. That kind of service is usually more like a locksmith call than a retail copy. In Baltimore, I would expect a service visit for problem key work to land somewhere in the $80 to $150 range, sometimes more if there is rekeying or damaged hardware involved.
If you’re dealing with a car key, a mailbox key, or a front door key for an older rowhome in Charles Village, the price can also swing based on how common the blank is and whether the original key is readable. A worn key might still open the lock, but it may not duplicate cleanly, which means the copy could stick or fail after a week or two. That’s why a good locksmith will check the key, the lock, and the cut before calling it done.
The catch is this: cheap copies are only cheap if they work. A bad duplicate can cost you time, a return trip, and a call in the rain from a parking lot in Hampden or a rowhome in Parkville. That is a bad trade.
More on this from ALOA Security Professionals Association.
Why do copied keys stop working as well?
Copied keys fail for a few repeat reasons. The first is wear. After enough use, the original key loses crisp edges. Copy that key, and the duplicate inherits the wear plus a little machine error. Do that again, and the trouble stacks up.
The second problem is the blank. A soft blank can flex at the shoulder or twist in the lock. We see this most on bargain keys from the wrong rack, especially when someone asks a hardware store to match a key that really wants a better blank. The third issue is the lock itself. Spring tension inside the plug, dirty pin chambers, or a worn cylinder can make a good key seem bad.
There is also the human side. People keep the worst key on the ring because it still sort of works. Then they come in for a copy, and that worn key becomes the master sample. Truth is, the best duplicate starts with the best original. If you have one key that turns smoothly and another that hangs up, bring the better one.
When a duplicate feels off, do not force it. You can damage the key and the lock at the same time. That is how simple jobs turn into cylinder rekey work.
Need help right now?
Easter’s dispatches a real W-2 locksmith crew across Maryland, Northern Virginia, DC, and Delaware. Free written quote before work starts.
When should you copy a key yourself and when should you call a locksmith?
Honestly, a basic house key is often fine to copy at a self-serve kiosk or hardware counter if the original is sharp and the blank matches the lock. If you live in a newer Towson condo, a simple Schlage key or Yale key may duplicate cleanly off the shelf. Keep your expectations realistic. The machine is doing a quick tracing job, not a locksmith evaluation.
Call a pro when the key is old, bent, stamped with a code you do not understand, or tied to high-security hardware. Also call if the key has already been copied a few times and now feels vague in the lock. That is where we see the problem most: one copy making another copy, until the cuts drift enough to matter.
Here is the thing: if the key opens the front door, the mailbox, or the only working deadbolt on the property, I do not recommend experimenting. A wrong copy at 6 p.m. becomes an emergency at 6 a.m. If you are handling rental turnover in Baltimore County or checking keys for a small office, a locksmith can save you from handing out duds.
And if you need a broader look at what we do around keys, locks, and rekeys, Easter’s covers that work every day across the region.
What kinds of keys are harder to duplicate?
Some keys are simple. Some are not. Standard house keys are the easy end of the job. High-security keys, restricted blanks, and anything tied to a master key system take more care. Medeco keys, for example, are not handled the same way as a basic copy for a bedroom door. Many apartment and commercial systems use keyways that are meant to control duplication, and that changes the process immediately.
Auto keys are a different animal, and I am not mixing those into a simple house-key discussion. Even within a building, mailbox keys, padlock keys, and deadbolt keys can all use different blanks and different tolerances. If the key has side milling, dimples, or an unusual profile, the copy needs the right equipment and the right blank.
We also see trouble with older worn keys for Liberty, Cannon, and similar safe hardware when someone assumes a hardware-store copy will work on everything. It usually will not. Safe keys and high-security blanks often need the right source and a steadier hand.
Most folks don’t realize the lock family matters as much as the key itself. A key that works fine in one brand can fail in another, even if they look close. That is not the machine being fussy. That is the wrong blank.
How does Easter’s handle key duplication differently?
We start by looking at the original key and the lock it belongs to. That sounds simple, but it keeps us from copying a bad sample and sending you home with a problem. If the original is too worn, we will tell you. If the lock is the real issue, we will say that too. I would rather slow down for one minute than make you come back twice.
We handle key duplication for Baltimore Metro customers every day, and we also cover Maryland statewide, plus Northern Virginia, Washington DC, Pennsylvania, and Delaware. The job may be local, but the standards do not change. If a key needs code cutting, a better blank, or a cylinder rekey because the lock itself is worn, we deal with the actual cause. That is the part nobody sees from the parking lot.
Easter’s holds Maryland Locksmith License #0010, issued in 2004, and the family business goes back to 1953. That matters because we have seen what works on older rowhouse hardware, newer commercial cores, and the random stuff people bring in after buying a house in a rush. We service keys and locks, and when the lock is the problem, we address the lock, not just the copy.
If you need key duplication in Baltimore and want it done without guesswork, call the local line at (410) 825-3535.
Frequently Asked Questions
Sometimes, but not always. A bent key can copy into a bad duplicate very easily, especially if the shoulder is off or the tip is worn. If the key still works smoothly, we may be able to use it as a sample. If it is badly warped, the better move is to make a key by code or work from the lock.
That usually means the lock is part of the problem. The duplicate may be close enough to spin in a loose cylinder, but not exact enough for a worn deadbolt or sticky knob. It can also point to dirt, spring tension issues, or a blank that is just a little off. Bring both keys and the lock context matters.
Yes, sometimes. Apartment keys may be tied to restricted blanks, master key systems, or landlord-controlled hardware. A basic copy may work, but high-security or controlled keys often need proof or a locksmith who understands the system. If your building uses a branded keyway, assume the process is not the same as a house key.
I usually tell people to make enough for daily use plus one backup. If it is a front door key, two or three good duplicates is usually enough. If it is for a house with multiple people coming and going, make a clean set now while the original is still sharp. Waiting until the last key wears out creates problems.
No. A lot of basic keys are fine at a hardware counter, but restricted keys, high-security keys, and some older worn keys are a different story. A store can often trace the cut. It cannot always judge whether the original is too worn to copy cleanly. That is where a locksmith is the safer bet.
Not always. If you have a clean, current house key, a simple copy may be enough. If the original is worn, the lock is sticky, or the key matters because it is the only one you have, call a locksmith. The small extra step can save you from a key that looks right and acts wrong.
If you need key duplication in Baltimore and want the key checked against the lock, call Easter’s at (410) 825-3535.
47 years. Maryland Locksmith License #0010. Real W-2 crew. Free written quote.