I've watched a few YouTube videos that showed me how to fix a sagging door by bending the knuckles of the door hinge, such as this one and this one here.
However, I am perplexed as to how these instructors are able to do this by using a crescent wrench as the tool to do so. I just can't seem to get a firm grip on the knuckles to perform the bend. This isn't surprising considering that the shape of the knuckles is circular, thus causing the tool to slip/rotate.
Am I missing something?
Best Answer
In all my years of hanging doors, prehung and many from scratch, where the hinges were cut in as well as all the other hardware, I have never needed to bend a single hinge. If the sagging is from loose screws, they need tightening or replace with a longer screw for better grab. Sometimes the hinge need a shim placed behind it cut from cardboard and build up the thickness as needed to get the gap right. Even hinge makers supply the precut cardboard to use as shims. At least with Stanley commercial grade hinges. But there would need to be a really good series of pictures presented to suggest where the shims need to go or even where the problem area might be. But these two tricks are all I ever used to remedy a door that was originally set well in it's opening. If it was not set right to begin with, usually other factors need to be addressed as well