Key Stuck In The Lock? Do This

A key that will not come out is telling you something specific. Usually it is wear, occasionally it is the mechanism, and rarely it is the key alone. Consequently forcing it is the one response that reliably makes things worse.

Why keys jam

Cylinders collect dirt and dried lubricant over years. Meanwhile the key wears thinner with every use. Eventually the two no longer align cleanly, and the key catches on its way out. Furthermore, a lock that has been oiled with WD-40 gums up faster, because oil attracts dust. Therefore a jammed key is usually the end of a long process rather than a sudden fault.

What not to do

Do not force it, and do not twist harder. Because brass is softer than the cylinder, the key breaks before the lock does. Similarly, pliers give you leverage that the key cannot survive. Additionally, avoid lubricating sprays containing oil, which make the underlying problem worse. Above all, a snapped key turns a five-minute job into a longer one.

Try this instead

Return the key to the exact vertical position it went in at. Consequently the pins drop back into line and it often slides out. Moreover a gentle wiggle while pulling straight works more often than pulling hard.

If it has already snapped

Extraction tools slide alongside the blade and draw the fragment out. Done carefully, the cylinder survives and keeps working. However, failed attempts with glue or pliers usually push the fragment deeper. Therefore stop as soon as it breaks rather than escalating.

Fixing the cause

Extraction alone is temporary if the lock was already stiff. Consequently cleaning and rekeying restores smooth operation cheaply where the body is sound. By contrast, a cylinder with worn pins and a chewed keyway is past saving. Therefore ask for both prices, and expect an honest answer about which is worth doing.