THIBAUT used all its know-how for the conception of this machine, as well as its knowledge of polishing techniques.The result is an extremely sturdy machine, with a bridge and a vertical carriage in cast iron, put on a runway using real train rails (Very High Speed Train), carefully calibrated.Chosing a T558 flat polisher is chosing the sturdiest machine of its category, able to achieve an excellent polishing quality, and for longtime.