Abstract: A machine is described that enables to perform continuous etching, according to previously chosen patterns, on a face of glass sheets, in particular of big size. This machine having a high productivity per hour, substantially comprises a roller conveyor formed of a plurality of parallel rollers, all of them having the same diameter, and being driven for feeding forward glass sheets with one face lying on the plane surface defined by the upper generating lines of the rollers, tangentially thereto. The rollers not only feed forward the glass sheet with a controlled speed, but also wet the sheet surface to be etched in an even manner, as they are provided with a spongy outer surface being continuously steeped, during the rotation, in an acid solution which is contained in a lower reservoir and then is transferred by contact to the lower face of the sheet.