Device and method for making efficient y-pipes

A device for decreasing the vertex angle of a Y-pipe, the device comprising:

• a first piece configured to hold the Y-pipe, the first piece comprising a holder portion and a jaws portion, the jaws portion being moveable with relation to the holder portion between at least a first configuration and a second configuration, wherein, in the first configuration the holder portion and jaws portion form a holder for the Y-pipe with the jaws portion forming a first angle, and in the second configuration the holder portion and jaws portion form a holder for the Y-pipe with the jaws portion forming a second angle which is less than the first angle;
• and
• a second piece configured to be inserted into the vertex of the Y-pipe, the second piece comprising a wedge portion and a punch portion, the wedge portion being configured to be inserted into the vertex of the Y-pipe and the punch portion having a tip and fitting at least partially within the wedge portion and being moveable with relation to the wedge portion between a retracted position and an extended position, wherein, in the retracted position the tip of the punch portion is in a first position with respect to the wedge portion, and in the extended position the tip of the punch portion is in a second position with respect to the wedge portion, the second position being closer to the holder portion of the device than the first position;
• the device further comprising a control system configured to control the movement of the jaws portion and the punch portion such that the movement of the jaws portion between the first configuration and the second configuration is synchronised with the movement of the punch portion between the retracted position and the extended position such that the Y-pipe held between the first piece and second piece has its vertex angle decreased.