Posted by bloke on February 03, 2004 at 11:27:35:
In Reply to: Helleberg-rim mouthpiece advice needed posted by Jon Meyer on February 03, 2004 at 10:57:24:
Marcinkiewicz makes a shallow helleberg, H4, with a fairly flat rim (not quite as flat as Conn), and a shallow funnel cup...
...this compared to deepest funnel cup - (H1) and H2, H3...