3D printing is an option
Unfortunately I don't have access to a lathe, because that would probably deliver the smoothest and roundest results.
You would get the similar result, but if we go this deep, the screws, the stand and everything below the capsule will affect the sound to a certain extent. Also the exact height and the position of the capsule is quite important.
it's not exactly a dome though, right?
Damn I don't want to ask you to open it up again but do you have any pics of it open and how you got it to fit?I finally squeezed my proctop pcb in mine, kept not working and was the capsule connections touching the middle tube so I put some tape over them and tucked them out the way.
Put some thick rolled up wire in the bottom so when the bottom cap tightens it’s nice and secure and used the underneath washers to lengthen it so the pcb can fit!!View attachment 114680
View attachment 114681