New answers tagged studs
Why not just measure the height of your bracket and keep note of it, then next time mount it a few inches higher or lower so you don't risk hitting the same spots? I suppose you could also plot the X,Y co-ordinates from a corner of the wall and mark those spots to avoid when you move back.
Chip away the drywall over the hole and install a Stud Plate. These are designed to stop anyone from drilling into a wire that runs through a stud. Patch the drywall. Next time, if you can't find the location, and accidentally drill in the same spot, you'll hit the stud plate.
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