Please note this is only a prototype banana. Production models will sport a trendy yellow anodized finish.

I did not consult that site, the ASME Scaling Banana™ measures 214mm. It was made from a composite 3d scan of 4 different bananas bought from 3 different retailers. Your banana may vary.

The Scaling banana contains no Potassium-40, but it does probably have some Aluminum-26 in it. Further testing will be needed to ascertain the actual B.E.D.

I put the pic in the comment, it loaded on my side so idk whats up. But basically, I did it in 2 sides. The back side had its roughing and finishing pass done while clamping the billet. The front got its roughing pass again clamping billet. It was supposed to leave .020" thick tabs to keep it in the billet for the finishing pass but they ended up breaking off. So I used the cad drawing to cut an exact pocket of the banana in a piece of wood. The banana fit pretty snuggly into the pocket so I just used some silicone sealant I had on hand to keep it from lifting out during finishing.

I have not seen one of those before, it would make a good companion tool.

Just a 3 axis and a custom fixture.