A spindle moulder (often called a shaper in North America) is a powerful stationary machine designed to cut profiles, moldings, and joints using custom-shaped cutter heads mounted on a vertically oriented spindle.
It is the tool of choice for high-volume production of decorative moldings, door and window components, and precise joinery like tongue-and-groove.
Compared to a hand-held router, a spindle moulder offers vastly greater power, stability, and precision, especially when working with large stock or hardwoods.
When used with a power feeder and a sturdy fence or jig, it can produce consistently flawless and repeatable results with a level of safety and control unmatched by portable tools.