Which tool is considered a favorite in gun shops for smoothing down replacement pieces for gunstock?

The belt/disk sander is a preferred tool in gun shops for smoothing down replacement pieces for gunstocks because it provides an efficient and effective method for achieving a smooth finish on composite materials, such as wood or synthetic stocks. The combination of the belt and disk allows for versatile sanding options; the belt is useful for shaping and removing material quickly, while the disk can refine edges and provide a finer finish. This capability is especially important in the context of gunstocks, where precision and smoothness affect both the aesthetic appeal and functionality of the firearm.

Other tools like routers, while excellent for edge work and shaping, may not offer the same level of control for sanding surfaces as a belt/disk sander. Hand saws are primarily used for cutting rather than smoothing, and chisels serve a more specific purpose in shaping and carving rather than large-scale surface finishing. Thus, the belt/disk sander stands out for its ability to efficiently handle the smoothing process required in customizing gunstocks.