Re: Perhaps
>drive in a screw with a lump-hammer
I hired a guy to put in a doors with windows on either side. In the walk out basement opening he hammered the screws into the concrete walls. He did drill the holes first. And in his defense this was a long time ago. Way before impact drivers or even battery powered drills with a high torque setting. So putting a screw into concrete was chore.
But still, I didn't hire him for anything else after that.