Keys can break inside locks due to wear, forcing, or manufacturing defects. While frustrating, a broken key can usually be extracted without replacing the entire lock.
Why Keys Break
- Key is worn thin from years of use
- Forcing a key in a sticky lock
- Poor quality key blank or cutting
- Corrosion weakening the metal
- Twisting the key too hard
What NOT to Do
- Do not use super glue: You will make extraction much harder
- Do not push the broken piece deeper: Makes extraction difficult
- Do not force the lock: Can cause damage requiring replacement
DIY Extraction Methods
If part of the key is protruding:
- Needle-nose pliers to grip and pull
- Key extractor tool (available at hardware stores)
- Thin jigsaw blade to hook and pull the key
Professional Extraction
Locksmiths have specialized extraction tools designed for this purpose. They can:
- Remove the broken key without damaging the lock
- Check the lock for any internal damage
- Make new keys from the broken pieces or by decoding the lock
- Address any lock issues that caused the break
