If your key won’t go into a door lock, don’t reach for the WD-40. All you need is a graphite pencil to solve the problem. Over time, dust and dirt make their way into the door lock cylinder, causing ...
This simple pencil hack uses graphite to free up sticky pins — and it actually works. Use graphite from a pencil to temporarily lubricate a sticky door lock. Avoid WD-40; it attracts dirt and worsens ...
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