Recently, I’ve been working on hollowforms. For the non-turners out there, I suppose a hollowform is best described like this: there is an opening in the top of the vessel which is smaller (sometimes significantly so) than the maximum exterior diameter, through which the bulk of the interior has been removed.
These are challenging; you cannot see what the cutting edge of your tool is doing. Instead, one must rely on the feel and sounds of the tool on the wood. One goal is a thin, consistent wall thickness – I’m getting better at that. Below are three of my first hollowforms – Black Cherry (Prunus serotina), Spalted Silver Maple (Acer saccharinum), and Pecan (Carya illinionensis). They vary in size from five to seven inches tall and three-and-a-half to five inches in diameter.