I've got a nice little Tasmanian Myrtle Burl bowl (6" x 4") i made a few weeks ago. After having some time to look at it, I've decided i want to put it back on the lathe and re-do the bottom.

At first i thought I'd make a jam chuck and just shove the bowl on and start turning... but now I'm having 2nd thoughts about safety.

Whats the proper way to re-work a bowl? Its the end of the month and my hobby cash is in the negative column so i cant buy any fancy faceplate or cool toy.

Is a jam chuck safe? Am i just being a chicken?

~Brian

PS. I should point out the bowl has quite a few natural cracks that make it a bit fragile.