Replacing some old wiring with crumbling insulation. One of the wires passes down through an exterior wall from the attic, to an outlet on the second floor, and continues down to the first floor.
I attempted to follow the same path, but I drilled over 6 inches into the bottom of the wall and still haven't broken through.
The drill seems to be really struggling through the wood. Started with a 3/4 auger bit on an 18" extension. That stopped making any more progress so I switched to a 5/8" spade bit on the extension instead. Now the spade bit is fully into the hole along with part of the extension.
Not sure if I should keep going. The old wire goes through, but is there a chance I'm going to cause problems if I keep drilling? The house was built in 1930, so I assume the drilling difficulty is due to the wood used. I'm just worried about weakening the beam or something.