Tubing & Metallurgy
The differences in density, hardness, and ductility of each kind of material naturally lead to differences in the flute-making process, maximizing the overall performance in terms of tone and harmonic structure.
The AL and 1607 are manufactured with a seamed tube, a method used by the great old French flute makers, where a single metal sheet is rolled, shaped, and soldered forming the tube. Compared to ordinary drawn, seamless tubing, the seamed tube method is more time-consuming and requires great skill. As the flute is played over time, the residual stresses in the metal gradually dissipate and the molecular arrangement changes to a more ideal form for producing sound.
A pure silver flute possesses supreme projecting qualities and it requires cutting-edge technology to produce. Powder metallurgy is the method used for processing silver of such high purity, in our case , .997 silver that is standard on the Altus PS. Usually, pure silver is too soft for successful flute tube production using traditional methods, where metal is melted. However, powder metallurgy makes this possible, and has benefits to not only the sound quality but also the durability of the instrument.