Does anyone know what type of aluminum I should use to water cut a

Does anyone know what type of aluminum I should use to water cut a prusa i3 frame? I’m seeing like different grades and different types of 6mm sheets, not too sure which kind I should attempt. Thanks in advanced!

5052-H32 and 6061-T6 are 2 of the more common general purpose ones that a metal shop would likely have in stock. 5052 is better for bending and forming while 6061 is easier to machine. Neither of those things really applies when using flat sheets to make a printer so you could just go with the less expensive one.