OK, this is how I did it this time round, I've done this with a donut chuck as well, but this time, the hollow form was real thin like, so compressing it in the Donut chuck was not going to happen. I hope to get my Vacuum pump soon, then I'll be able to vacuum chuck it but, until then this is what I did.
I had a square piece of wood, that I'll eventually use for making a handle on something, but today, it worked as an extended "Jam Chuck".
I turned it down so it will fit into the hollow form, and put a small radius on the end of it, so it was not too flat.
Next I cut a round foam pad and stuck it on the end of the piece. (using the tail stock to hold the piece while the glue dries).
I then slip the hollow form over the jamb chuck and........
.....bring up the tail stock.
I carefully cut the tenon away, and then sand, and finish it (at this point only sanding sealer).
With only a little stub left, I cut that off with a sharp chisel, and then sand the bottom
here is the nearly finished piece....
Attachment 11715 Attachment 11716 Attachment 11717
Six inches wide by about three inches tall, turned to about 1/6" most of the body, with the very bottom only turned to about 1/4". I've found the extra mass at the base makes these hollow forms sit better.
The wood is Red Keyaki and this is the only hollow form I've done without a collar of some sort.
The piece is sanded and finished inside too.
The outside is sanded through #600, and finished with two coats of sanding sealer, I'll be rattle can lacquering this piece later.
Well that is how I do it, if you can help me refine my technique or have something else to add, please do. If you have a question, I'll try to answer.