I decided to try a repair on my broken hinge just before Christmas as I'd rather not have to go removing trim if at all avoidable
The usual problem, pin & hinge had ceased causing the hinge to break. I drilled a 2mm hole into where the recess would be in the hinge while the hinge was still ceased ( carefull you don't go too deep, I went slightly into the pin ), then I heated the hinge & got it moving. I then inserted a piece of a tack into the hole so the hinge on the door handle would have something to bond to.
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I removed the hinge from the door handle & roughened up the inside of it where it'd be in contact with the pin, I also drilled 2 holes in it to increase the changes of the J-B Weld holding.
I glued a small piece of wood as a spacer just under where the end of the tack sits so it would sit in the correct position & not in too far & then I covered this & the rest of the inside of the hinge bracket on the door with masking tape so that the J-B weld couldn't bond to any metal.
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Then I heated the hinge from the door handle slightly before applying the J-B Weld, reattached it the the inside of the handle with the screw, applied some J-B Weld around the pin on the door, pushed the handle into place & held the handle in place until the next day with masking tape.
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More than a week later it's still in one piece & hopefully it'll last
It broke again two weeks ago.
The tack had remained bonded to the part of the hinge screwed to the handle but instead had pulled out of the hole I drilled in the part attached to the door ( probably mostly my fault as I pulled the handle out more from the front than the back without thinking )
Also I noticed the hinge has ceased again & was rusty so I put some grease on it after freeing it up ( not much space to do this without contaminating the area to be bonded ), hopefully it'll last longer this time.