I was trying to make a ball-shaped bowl 6" wide, 5" high, with a less than 2" opening. This is very dry sycamore. The tool has to be sharp and at just the right angle to avoid a rough chatter.
I am amazed at how many leverage and physics forces are at work in this little piece. Most recently, the side of the scraper caught the edge and turned all the weak spots into cracks. I am super-glueing the cracks to finish it as is, with walls about 3" thick .
All that is to say, I am really impressed by the skills you folks have, who can turn a thin-walled hollow form.
Kudos and respect!