PURPOSE: To manufacture an iron for second category washings by means of a rational price by electrically separating the metallic sheet of a resistance heating element from first and second plates on the respective side parts by means of a separated and overlapped Micanite board.

CONSTITUTION: The resistance heating element is made to be electrically independent of the first and the second plates 1 and 2 by the two overlapped Micanite separation boards and the first Micanite board which is mechanically joined with the metallic sheet of the resistance heating element 4 and with its adjacent Micanite boards 5-7. The plural Micanite boards are 0.1 mm±0.02 mm in thickness. They are mutually energized in order to assemble the plates 1, 2 and 10, the assembly is heated and the brazing alloys of roll joining layers 1c, 2b and 10b is adequate to be melted. Thus, a base (source plate) for the steam or dry iron of the second category is obtained with a comparatively reasonable price.