Patio latch?
I might be able to find a replacement assembly. Or that part can be welded pretty easily
If that is a patio door lock, can't you just buy a new lock to slide into the door?
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Jb weld wouldn't work, yes patio door, this is a double latch huge lock assembly.. Nothing came close to matching it in the stores I mentioned. If someone could make or weld I would be willing to mail and pay for mailing it back or meeting someone.
Weld it and file it flat.
If you are handy enough, buy a piece of metal at hardwarestore, drill holes and file the outline, smooth with a sand drum.
Cheapest fix.........Drill a small hole in each piece, pop river a connecting link to them.
OR a quick spot weld.
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