The A-1000 4G model lathe represents the embodiment to the Gurutzpe 4 guide-way principle. Its singularity lies in the great versatility which allows the carriage to pass in fron of the tailstock and steady rests because it travesl on its own two indepent guides. This design enables the internal and external machining processes in one operation, avoiding unproductive time for piece centering and holding. Moreover, its invertid “V” prismatic make posible an automatic alignment and a rectilinear trajectory of the carriage upon the bed.