Marlowe
Gold Member
I needed to run a sewage drain pipe through a concrete block wall this past weekend to add a bathroom in the garage. This project required a hole cut to allow for the three inch pipe. I did some careful measuring for height and distance then started drilling with my SDS drill and masonry bit. My plan was to cut a circle with the drill then knock out the center with a big hammer. My first hole was flowing along nicely until I was about through then the drill bit locked up on something in the hole. No way was it going through and the drill was jerking out of my hand. I didn't have any straps at that point but it could have been rebar, so I moved to the next spot and drilled through without incident as I did for the rest of the circle. Then I knocked out the plug with a hammer, but I still had a problem with that first hole. Looking in the hole I found the issue. One of the bolts I used to attach the sill plate was imbedded in the concrete which I poured to fill in the cavities in the block wall. That's when I remembered my oldest daughter telling me a couple of years ago when I filled that wall with concrete, "Dad, I dropped one of the bolts. Do you want me to try and get it out?" I answered, "No. Don't worry about it. I'll never see that bolt again." Two hours later I'd worked around that bolt I thought I'd never see again. So, what's the chances of the first hole I drilled hitting dead center on the one bolt she dropped out of over one hundred?