See below

I wonder why the electrical was not run before the walls were sheetrocked? I've never seen a code compliant wiring job done without exposing the wiring run areas.

Here is a link that might be useful: Sheet rock saw

This post was edited by handymac on Mon, Oct 13, 14 at 0:25

Drywall router such as Roto Zip....

Bassackwards. Now you'll have a lot of drywall repair that didn't need to happen.

Another example of asking advise, after the damage was done.

I found this link very helpful:

Here is a link that might be useful: Drywall repair