Club Member question.

NOTE this is no longer an active question, but is left here for interests sake. Thanks to all those who responded with suggestions!

Club member Derek Luke has a wood turning challenge with which he would like assistance. Maybe some of our more experienced members can offer some advice.

I have made a cone which I hope to mount on a spiral silver strip if I can finish it.
Measures  Ht. 155 m.m.   width 160 mm
Now I want to hollow it to make it into a bowl
The shape seems difficult to make a wooden holder
How can I reverse mount this shape.
Specific details would be an advantage as I have not tried this before.
Maybe someone on the club help board can help

Regards
Derek LUKE