Assembling and using the Wind Singer

Anyone interested in owning this instrument is welcome to visit my Etsy store: The rod used for construction is the fourth consecutive material I have tried and I think it is the best. No type of wood provides sufficient flexibility and resistance, and the previously used acrylic glass transmits the vibrations of the rubber membrane nicely and looks more aesthetic, but it is brittle and unstable and after a few weeks of use it cracks at the joint with the wooden handle.