Vase question

[boxmaker]

I am sure Jimbo knows the answer to this question. I do not own a lathe, but was wondering how they cut the inside out on a vase, do they do that on a lathe. I see this vase on the morning show and am always fascinated how in the world did they make it. I realize it is probably an in depth answer, but just curious to how it is done. Thanks Mark.

[jimbo]

You turn the outside first to the desired shape then start hollowing, [not that simple], you have a special hollowing tool as it is end grain that is being cut. I have included a pic [sorry it is side ways] this vase is about 9" tall and 5" dia.
It is best to use green wood as it cuts a lot easier
Jimbo

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[boxmaker]

Wow!, Thanks Jimbo that's amazing. I can't believe it all stays together when it is turning. Now I know. Thanks Mark.

[jimbo]

Turning such a large peice the speed is down to about 700rpm or untill there is no viabration
Jimbo

[northie66]

How do you know when you've hollowed out as much as you should?  Have you ever hollowed it out too much and it was too thin?

[jimbo]

Yes I have gone through the side and bottom, you use calipers for the sides and a ruler to measure the depth
Jimbo

[Russ C]

Awesome job, I like the color. Thanks for posting your work. 

[BigE]

That's great work on the vase. I learned to use a strong light along with the measuring instruments to get the sides thin without going thru. You can see the tool when the sides get thin with the light on it. Try it sometime.
BigE