Design Nomenclature / Physical Model Making
Shell
Also called perimeter, wall, wall count, wall thickness, skin
This entry has not been translated yet and is shown in English.
The solid outer walls of a print, counted in perimeters rather than measured in millimetres. Shells carry the load, close the surface, and decide whether small features exist at all — a rib thinner than one extrusion width simply does not print, whatever the model says. Two shells is decoration; four is a part.
