Hello everyone! I am currently working on a project where I have a piezoelectric sound transducer connected to a glass tube via an aluminum disc. I got two aluminum discs with one twice the thickness as the other. I wanted to know which aluminum disc would work best, the thin one or the thick one, to transfer sound from the transducer to the tube. The tube will be filled with water as well if that makes any difference. Thank you for your help and hope to hear from somebody soon!