On Wed, 22 Apr 2015 20:03:55 -0500
Martin Eastburn wrote:

Not so much the tools, but the ability and capability.

what's the difference

If you want to turn Urns that are 36" in diameter, one has to want
something else than his bench-top. So the early guys designed theirs.

that's a big urn

i do recall seeing a 5' bowl turned at a convention
the fellow looked a bit nervous
i never saw the final bowl