I am putting a new switch in a partition wall. I drilled down through 3" of
wood that I presume is a doubled 2x4 header. When I tried to put the cable
down, it went about 3" past the bottom of the header and then hit a dead
end. It is approximately the same height as the door frame it is next to.
Any idea what this blockage is? I can't imagine why there would be anything
there, but I don't know much about carpentry.
I didn't have the right drill bit to reach that far, so I haven't gotten
into it, but I hoping it is just a 2x4.