Can you rekey a lock yourself?

Rekeying a lock is the process of changing the combination of pins inside the lock so that a new key can open the lock. This allows you to gain access to a lock without replacing the entire lock. There are a few factors to consider when determining if you can rekey a lock yourself.

What tools do you need to rekey a lock?

The basic tools you need are:

• Rekeying kit – This contains new pins and keys.
• Lock picking set – To remove the lock’s cylinder.
• Hammer – To tap the pins into place.
• Needle nose pliers – To remove old pins.
• Flat head screwdriver – To remove the lock’s cylinder.

Many rekeying kits provide detailed instructions on how to rekey different types of locks. Be sure to get a kit designed for your specific lock type.

What skills are required?

The main skills required are:

• Dexterity – You need steady hands to manipulate the tiny lock components.
• Patience – Rekeying can take 10-15 minutes per lock.
• Attention to detail – Pin lengths must be inserted precisely.
• Basic mechanical skills – You’ll be disassembling and reassembling the lock cylinder.

If you don’t have experience with locks, rekeying will involve a learning curve. But with some practice, it’s a skill most people can develop.

What types of locks can be rekeyed?

The most common locks that can be rekeyed are:

• Pin tumbler locks – These are used on most residential grade deadbolts and door knobs. Rekeying kits are readily available.
• Wafer tumbler locks – Found on some older locks and padlocks. Rekeying is possible but wafer kits aren’t as common.
• Lever handle locks – Rekeying is possible but not as straightforward as pin tumblers.

Padlocks, safes, car doors, and high-security locks generally cannot be rekeyed. You would need to call a locksmith for these types of locks.

Should you hire a professional?

A professional locksmith can rekey your locks quickly and ensure it’s done correctly. However, their services aren’t cheap. Here are a few factors to consider:

• Cost – Locksmiths charge $5-$20 per lock. DIY kits cost $8-$30.
• Convenience – A locksmith can rekey locks onsite so you don’t have to remove them.
• Security – Professionals have specialized tools and experience rekeying locks.
• Time – DIY rekeying takes 10-15 minutes per lock. A locksmith can do it in under 5 minutes.

For most standard residential door locks, rekeying is a project a homeowner can tackle themselves following video tutorials. But for high-security locks or intricate installations, hiring a professional may be the best option.

Step-by-Step Guide to Rekeying a Lock

Here is a step-by-step overview of how to rekey a basic pin tumbler deadbolt lock:

1. Remove the cylinder from the lock – Unscrew the faceplate and use a lock pick or flathead screwdriver to pull the cylinder out of the bible (housing).
2. Take apart the cylinder – Remove the circlip and cam (if present) so you can push the plug out the back of the cylinder shell.
3. Remove old top pins – Use needle nose pliers to grip the top pins and pull them out of the plug.
4. Insert new bottom pins – Place the correct new bottom pins into the plug based on the included key.
5. Add master top pins – Place the shorter master top pins on top of the bottom pins.
6. Replace cylinder components – Slide the plug back into the cylinder shell and replace any circlips, caps, and cams.
7. Reinstall cylinder into the lock – Insert the cylinder back into the bible and screw the faceplate back on.
8. Test the lock – Verify the new rekeyed lock functions correctly with the new provided keys.

It’s critical to keep track of the order and orientation of the lock components. Refer to your specific rekeying kit’s instructions for detailed guidance. With some care and patience, the process is very doable for most DIYers.

Troubleshooting Rekeying Problems

Here are some common issues and solutions when rekeying locks:

Problem	Solution
New keys don’t work in rekeyed lock	Double check pin lengths and ensure pins are aligned properly inside the plug. You may need to repeat rekeying process.
Rekeyed lock is stiff or hard to turn	Apply a dry graphite lubricant inside the lock cylinder and working components.
Old keys still open rekeyed lock	Some old pins may still be stuck inside the lock plug. Ensure all old top pins are completely removed.
Plug keeps sticking in cylinder	The cylinder shell may be slightly bent or out of alignment. Try replacing with a new cylinder shell.

If you are still having issues after troubleshooting, it may be best to call in a professional locksmith to inspect and repair the lock.

Rekeying Tips and Precautions

Here are some handy tips when rekeying locks:

• Check that all pins are flush or slightly below the plug surface – Protruding pins will prevent cylinder from sliding back into the bible.
• Lubricate components with dry graphite or silicone spray – This makes reassembly much easier.
• Rekey locks to the same number of pins – Don’t reduce pin quantities or you may create problems.
• Label your pins – Tape them to index cards in order to keep pins organized.
• Have spare cylinders on hand – You can quickly swap in new cylinders to bypass rekeying troubles.
• Practice first on door locks – Not high-security deadbolts. Get comfortable with the process before tackling more advanced locks.
• Take pictures as you disassemble – Having photos of original configurations makes reassembly easier.

Exercise caution when rekeying locks in use on exterior doors or valuables. Accidentally locking yourself out could mean costly locksmith bills. Rekey one lock at a time so you still have access with your old keys.

Conclusion

Rekeying locks is a useful skill for homeowners to have. With some mechanical aptitude, the proper tools, and patience, most pin tumbler residential locks can be successfully rekeyed with a DIY kit. While hiring a professional locksmith is another option, rekeying your own locks can save you significant money, especially if you have many locks to service. Just be sure to follow instructions carefully and implement safeguards in case any issues arise. With a careful approach, you can avoid troublesome pitfalls and reap the benefits of rekeying your own locks.