Core drilling refers to cutting a rounded section of concrete, usually done to create space for new plumbing pipes, conduits, and the like. Concrete cutting may also need to be done to prepare a home's foundation for repairs or to add on a section to the home. While a do-it-yourselfer can handle concrete cutting and core drilling on their own, the job is not as easy as you might assume. Note a few questions you might have about the work and how to get it done effectively.