By using suitable face plate segments, the clamping range of almost all modern self-centering four-jaw lathe chucks can be significantly expanded upwards. The four segments have numerous threaded holes. Depending on the manufacturer, the scope of delivery includes round or square clamping claws that can be screwed into the threaded holes that match the respective clamping diameter.
Of course, workpieces can also be screwed directly to the segments, just like on solid faceplates. Another application that is easily forgotten is the possibility of attaching wooden clamping jaws made by the turner to face plate segments for special tasks. The photo on the right shows such a home-made chuck for clamping wooden coffee measures when unscrewing the ladle.