Its centre is the origin. Growing the blank moves no hole.

Set both and the block is hollowed into a tray, leaving the forming face at the face-wall thickness. Either at 0 leaves it solid.

The arrises round the blank, taken off. Nobody ships a part with them left on.

A former does not have to be milled from a billet. Cut it on a router and it is a stack of sheets glued up — so the block is divided here into the thickness the material actually comes in, and the panel says how many to cut.

It sets the weight and the look.