https://scientific-programs.sc....ience/wiki/15_Surpri
Bi Fold Door Repair - How to Fix Leaning Doors Without Removing the Hinges Bi-fold doors are a stylish and functional way to connect your indoor and outdoor areas. Like all doors, they should be maintained properly to work correctly. This can be accomplished by cleaning and lubricating the entire mechanism, including the lock, to ensure they work smoothly. This will avoid problems that could cause them to fall or become misaligned. Fix a leaning door If your door is sagging it could create gaps be