02/09/2026
π Sometimes it's the smallest parts of the lock that cause the issue.
In this case, a tiny piece of metal had broken off inside the gearbox of this uPVC patio door and all of a sudden that door wouldn't open for love nor money!
I got to the bottom of it though, ID-ing the gearbox and working out just where to make my mark to minimise damage to the door, get it open and fixed.