The extruder is a tool that pushes clay through pre-cut metal, wood, or plastic dies. It can be used to make small round coils or larger hollow tubes of varying shapes and sizes. Once you start experimenting with the extruder, you’d be surprised what you can do with it!
The following video will walk you through the process of using it.
So, in addition to the extruder being a tool to make coils and thin slabs, you can create forms to build directly with. Some examples are: