The automatic machine for the manufacture of rings soldered type BUT 2 has reached important put to technological level. The wide program of diameters of wand procesables with the BUT 2 and the simplicity of execution of the changes and adjust of measures allow to the machine be versatile, economic and productive at the same time. The realisation, besides, of the version reinforced BUT 2R elevates to 12 mm the diameter of wand procesable with the consistent increase of the power of welding. The system of advance of the wand of coil ensures extreme precision and proof in the maintenance of the lengths programmed. The operation of desenervado after the enderezado ensures excellent results on the planaridad of the rings soldered. The welding of tope realises through a mechanism projected by Varo, fed by groups of power and electronic controls to the avant-garde in the technology of the welding. To the BUT 2 can him join up independent special units for additional works, like presses of patterned for forms of star, for marks in "V” and "Or”, etc.