My wife's uncle was just describing a jig his son had that could cut a
spiral shape on a pedestal using a table saw. It sounded to me like
some sort of jig that would feed a piece of stock across the blade and
use a shallow cove cut that would create a spiral by rotating the stock
across the cove cut setup. Has anyone in this group seen such a jig?
Does anyone have any information or plans for making one?

Thanks,

Kevin