Bill Rubenstein wrote:
Bob Hewson wrote:

How would you define a hollow turned form?


The opening through which the inside of the blank is evacuated is small
as compared to the diameter of the piece.

That is a start, at least, I think.

Leo?

Arch?

Bill

Bob, I'll offer:
"If it cannot be made with a conventional straight gouge or scraper".
Certainly flawed as descriptions go, but I think it covers most cases.
Good luck getting a concensus. ;o)

David
www.wademade.net