I made a mandrel to turn carrots and avacado nuts, and I'm making a chess set, the lathe is a hand drill, tied down in a workmate with a shoelace(its like a workbench thats a clamp in the middle) and a block of wood under it, the mandrel has teeth pointing in.:)
drill ( )___________-------------) ( ) ^shaft ^inwards pointing teeth, that slide into place. (_)