Seamless hoop production. When to when?

[Jules]

Does anyone know when Sonor started making seamless hoops, and when they stopped?

If it was expensive and labor intensive to make seamless shells, it seems that the hoops would be even more-so considering their size and relatively low cost. Have there ever been videos published of them making the hoops?

Considering the high regard that seamless shell snare drums are held in, seems like there would be more demand for seamless hoops.

In addition to "when" they were made; it would be good to know which lines in that period did or didn't have the seamless ones.

[storsav]

Seamless hoops ended with Designers. I'm sure Sonor had a lot of backstock for a few years. I think the seamless triple-flange are way rarer than the Hella hoops, just because Hellas have been in production in various configurations for many years now. The sound of the triple-flange hoops is preferable in many applications. I sound like AI...