Serious question, how do you handle retrofit jobs in old plaster walls?
Honestly, I had a job last Tuesday in a 1920s house in St. Paul, Minnesota. The plaster was 2 inches thick in some spots and my drill barely got through it. I spent an extra hour and a half just trying to mount a panel and run wires without cracking the whole wall. Has anyone else dealt with this and found a bit or tool that actually works without blowing out the plaster?