Building renovation, demolition, a way to change. It is a core hole which is required for connections to the incorrect cutouts for Windows or doors, the remodeling of the Interior or structural measures in public. In the course of time, the everyday life of construction of has made easier! The technical achievements of today would make leaps into the air do allow some builders of yesteryear when you consider it was difficult or even impossible, subsequent changes after the completion of a building or a bridge to let. Where the workers at that time had an entire wall to tear down a suitable hole must only a round hole in the wall to get, will today at the concrete drilling machine using at lightning speed. Cutting concrete or concrete saw? Our ancestors would have shaken the head probably disbelief, but with the right tools, it is possible! Hammer and chisel of the past, when the saws made the cut for doors, Windows or stairs with wall saws and enable even shock – and dust-free work. While earlier were the pipes from the walls, are they become invisible thanks to joint cutting and again expose themselves too easily if necessary. Whether the carvers to edit concrete or another rock, it is impossible almost nothing. Cut joints not particularly exciting sounds in contrast to the core-drilling operation. Core drilling sounds wild, is nothing else but actually as a meaningful, vibration and vibration-poor way to get subsequent breakthroughs or recesses, without thereby attacking the structure of a building. Although technical progress are not always regarded as positive, in terms of the structural changes they have granted us so many seemingly insurmountable obstacles thanks to wire saws and the possibility of concrete drilling or coring out of the way, without being like a few centuries ago the human force to vanish under the weight!