Your argument seems to be that boron pipe is no longer available. I agree.
Boron Pipe is lighter than Boron Rod, laser mounted stylus tip on Boron pipe is also lighter, the moving mass is lighter and this is important for a high-end cartridge. It is extremely important for MM or MI cartridges and their high frequency reproduction.Ā
Ceramic Pipe cantilever from Grace is no longer availabe, that was one of the rarest cantilever ever!Ā
Beryllium Pipe from Audio-Technica is not available, it was Gold-Plated.Ā Ā
Beryllium cantilever from Victor is no longer available and it was quite unusual, look at the stylus.Ā
Also look at Titanium Pipe from Victor.Ā
The rest of your argument makes no sense.
So you ignored my point about Ortofon and SoundSmith cantilever systems with the diamond mounted not under the cantilever, but in front of the cantilever rod?Ā
If you are saying nobody nude mounts like your boron pipe example, namiki does it with zirconium tube.
Zicronia pipe is nowhere near Boron Pipe properties. My thread about Zirconia Pipe CantileverĀ is on audiogon since 2020 and people know nothing about this type of cantilever. Do you have any cartridge with Zirconia cantilever?Ā
I think titanium pipe may be still available, I'm not sure.Ā
Both Namiki and Ogura cut holes through their sapphire / ruby / diamond cantilevers to hold the diamond shaft prior to adhesive and while Namiki does only use glue for their Boron cantilevers OguraĀ has the typical mounting method used in all of your referenced pictures.
The diamond cantilever and stylus mentioned in this thread by OP is cut from one piece of diamond, this is unique method, no longer available.Ā
Sapphire or Ruby from Namiki are OK (not identical to old Sapphire or Ruby though). But look at SoundSmith Ruby is you want to see something completely different from anything else.Ā Ā
Enough said, when we discuss cantilevers I always think that people have no memory at all, it's been said so many times on audiogon.Ā