Set up a curtain rod in the ceiling in the basement and it was anything but easy with the nail plug I had available. I drilled 6 mm holes, but even though they were deep enough, I couldn't drive in the nail. Then I drilled them up to 7 mm and applied a bit of "No more nails." It should hold for the load, but it wasn't smooth.
What should one use to quickly install something in a rock-hard concrete vault? I have a few more curtain rods and possibly some acoustic panels to put up as well and want to avoid repeating the procedure above. They preferably shouldn't be too long so that I don't have to worry about hitting a water pipe.
