A steelbloc is the mandrel to press the decoration in a sheet of brass. The steelmendral for the inner garland. A ring of yellowbrass after the pressure-work for the decoration . The outer and the inner garland are ready to be fixed together by copper nails. Two parts of the boss are soldered together.
Short tubes are prepared and soldered together.
Calibration of cylindrical tubes. These lines in total give a number of 72 lines on the total instrument. This is a reference to King Bhumibols 72th Birthday. Cylindrical tubes are also needed to produce the bows. Bows Before bowing, the tubes have to be we weakened by fire and filled up with bowing-material.