I wouldn't give up! There are lots of other ways to try this. Some of the old cones were stamped but they didn't have the best sound. Check what you can get from McMaster-Carr as far as material and give it some thought. I know…"
"Hi Graham, as Terry explained if you don't have access to a lathe then the expense is quite high as you need to make formers and require special tools to do the job. Check out the various videos on youtube to get an idea of what is involved. As…"
"The alloy is most likely going to be something widely available like T6 aircraft aluminum, or whatever the spinner has decided gives the best tone for their configuration. The cost from crucible to rolled sheet makes one-offs too expensive to use.…"
"I play dobro so this question often comes up on dobro forums. There are a handful of people spinning them these days, Tim Scheeerhorn, Paul Beard, J.P. Quarterman and I think National spins their own. Some from offshore too. Almost all that I know…"
Welcome aboard, Graham! You will find lots of helpful folks and information here on all things CBG (CBU, CBB, etc.) Feel free to poke around, ask questions, and post your stuff (photos, recordings, videos, etc.).