Our next report is about long experienced classical guitar builder Angela Waltner. She makes premium guitars from local and tropical wood. Lately she used thermally modified wood for a soundboard and for back and sides. “The wood is slightly brittle and therefore easy to sand. The bending process of the sides made no trouble, so there was no disadvantage in the building process.” says Waltner. For her thermal treatment means an upgrading of the woods. With its greater resonance and a finely nuanced response, the sound of the guitar reminds to that of a long played instrument. That’s why Waltner believes the processed woods are ideal for the reproduction of historical instruments. The growing and shrinking properties are getting improved through thermal modification, therefore Waltner also sees the use for instruments which need to face different climatic conditions.