I am working on a bowl a bit larger than I've finished recently.

I normally reverse a bowl onto my cole jaws and turn the bottom removing
the tenon or anything else as I put the last finishing touches on the
underside.

This bowl is just slightly too big for the cole jaws I have but I have
others that are roughed out and drying that are coming down up soon.

Now what do I do? I figure that I maybe could cut some plywood to make
a jig to hold the bowl in place but I need a starting point of a design.