Decided to try to see how deep I can hollow with the tools I have today. The turning in the picture below is 12" long and 6 1/2 wide.
I mounted a pine log and turned it round, created the tennon, reversed it and finished creating the form, mounted my steady rest and using my index tool i hogged out as much as I could but at 10" plus off the rest things get a bit shakey at least for me so I changed over to the hollowing rig to finish the hollowing.
However, even with the tool rest adjusted up to compenstate for the drift of the tool downward that far off the rest..... it was slow going and probably not the safest thing but i was able to get it less than 1/4 thickness.
Toward the end of the hollowing when i stopped for a sec to clear chips i noticed that it had cracked bad .....being that far off the rest, using Pine for the project and the cutting probably caused the crack as i got thinner on the walls.......... so i scrapped it out. I think if i would have been turning it out of stronger wood like the mesquite I have it probably would have survived....................ahhhhh well ....some days are good turning days and others not so good but still learning the ropes to....